So with all the questions regarding brake upgrades lately, I thought it would be a good idea to put all the info in one place to stop new threads asking the same question from popping up everyday. One important thing to remember is that you can only stop as fast as your tires will let you.
Big Brake Kits
All of the following kits include 13 inch rotors, or optionally larger 14 and 15 inch rotors. Some of the kits also use either a 2, 4, or 6 piston caliper. These kits start as low as $240.00 and go all the way to $,3500.00+. Most of the 6 piston kits, (excpet for Wilwood) require the use of 18 inch wheels. With 14 inch rotors, 18" wheels are a must. One important thing that should be taken into consideration is the availability of replacement parts. With some of kits, you dont have much of a choice on where you can go for replacement pads and seals, so take that into account.
Brembo 
Brembo is probably on of the best know brake upgrade companies. There products have came as original equipment on cars such as the Ford Mustang Cobra R, Maserati MC12, and numerous Ferrari's including the Enzo, and 575 Maranello. The Brembo F-body kit includes 330mm x 32mm two piece rotors, and a monoblock four piston caliper using 40mm and 44mm aluminum piston. The kits are available with the calipers powdercoated in either
Red,
Black, or
Silver.
Baer 
Baer is also another well known big brake company. They offer both off the shelf and fully custom kits that employ the use of 2, 4, and 6, piston calipers that are available powedercoated in many different colors. The 2 piston kits use PBR calipers (same caliper used by the C5) and come with two piece rotors, that are offered in plain, slotted, and drilled and slotted. For the four and six piston kits, Baer has recently started producing their own calipers. The older kits used Alcon calipers, with the newer ones using Baers own pieces. Reasons for the change have been said to be that Alcon couldn’t keep up with the demand. The new monoblock calipers can be had in two versions, the 6S (sport) and the 6R (race). The main differences between the two is that the 6S has a cast in brace over the top of the caliper, while the 6R uses two stainless steel cross pins and spring clip for pad retention for and easier pad swap. With the 4 and 6 piston kits also comes the option for 14 and 15 inch two piece rotors (with the 15 inch using 10 inch hats).
Stoptech 
Stoptech is another company that also puts together a well thought out big brake kits for the F-body. Just for reference sake, this is the same brake company that LG Motorsports use on their World Challenge Corvettes. These kits use a 332mm x 32mm two piece rotor that is also available with options such as slotting, and cross drilling. It also uses a four piston caliper that is available in
Red,
Black, or
Silver at no extra charge, and also in
Yellow, and
Blue for an additional cost.
Wilwood 
The Wilwood kit has been around for a good while now, and a number of people use this kit. One of the advantages this kit has is its possibly the only 13 inch/6 piston kit that fits under a 17 inch wheel. This kit also uses a two piece rotor that has the slotted and corssdrilled options, with aluminum hats. The calipers are a two piece 6 piston design made from billet aluminum and is available in anodized colors, also with thermal barriers to deal with heat.
These calipers do not have dust boots, and are not recommended for street use, but that is up to the end user. The dust boots keep dirt, and brake dust out of the caliper and without them, the caliper will need to be rebuilt more often to prevent excessive wear to the pistons. This is also one of the few kits that require the purchase of stainless steel lines separately.
Movit 
Movit is a german company that puts together big brake kits using four and six piston Porsche calipers. Up front, you have a choice of three kits, 4 pistons with a 12.6" rotor, 4 pistons with a 13.5" rotor, and 6 pistons with a 13.5 inch rotor. Movit is also the only comapny that has a kit to run the Porsche 4 piston calipers out back with a 12.6" rotor.
LG Motorsports 
(best pic I could find)
LG Motorsports is well known in the LS1 F-body world, they were one of the first to produce a bracket that allowed the use of C5 Corvette rotors up front on the 98-02 F-body or 93-97 with 98-02 spindles. This kit is currently the only one on the market that requires no cutting of the spindles. You also have the option with this kit to retain your original gravity cast calipers, or upgrade to the stronger C5 pressure cast version. The advantage to using the C5 rotor is that it’s bigger in size (12.8 vs. 11.8), the rotor is directional, and that means better cooling, also the C5 replacement rotors can be had for as low at 20 dollars each. The brackets are machined from aluminum, and are anodized black to protect against corrosion. If using the C5 caliper, this bracket also opens up your choices of pad compounds.
-Parts needed for install
Bracket
C5 Brake Rotors(2)
-Parts Recomended/Optional
Pads
Caliper rebuild kit (if using stock f-body calipers)
C5 calipers
Brake fluid
UMI Performance 
UMI is a fairly new company. Their C5 bracket design is very similar to the Bob Bishop bracket, now being produced under the name Track Brackets. This kit has the same performance advantages and the LG bracket, except this bracket will fit all cars from 93-02 regardless of what spindle is on the car, but requires permanent modification to the spindle by cutting the "ears" of the spindle off. The upper ears on the 98-02 cars need to be removed, while both ears on the 93-97 cars require removal. The bracket is made from a single piece of aluminum and CNC machined into its final piece and then clear anodized for corrosion protection. UMI sells the brackets alone, or they can be had in a kit to cut down the time searching for parts.
Track Brackets/Bob Bishop Brake Brackets
These brackets are the original C5 conversion bracket. Bob Bishop sold the design, and they are now produced under the name Track Bracket. Bob Bishop has spent many hours researching different materials and differnt designs to arrive at his final product. He had these brackets put through hell and back in testing, and the design has proved more than adequate. The Original bracket was offered first in steel and then later in aluminum to shave unsprung weight. Bob has since stopped production on the brackets and the same design is now being sold under the new name "Track Brackets", only difference is that these are made in aluminum only and are anodized black. The new Track Brackets are CNC machined from a solid piece of billet 6061 aluminum.
Other Porsche Upgrades
Also there are also others who assemble kits that incorporate the use of Porsche calipers. There are limited numbers of these kits that are out there, but they are priced significantly lower than what Movit has to offer. One of the greatest advantages from this kit is the fact that you can run a 4 or 6 piston caliper, and replacement parts easily accessed at your local Porsche dealership.
Useful threads who has aftermarket brakes? BAER/Brembo/willwood? best aftermarket brakes Best Brake KIT? Porsche brake questions and more http://www.ls1tech.com/forums/showth...=1#post4369622 Useful links Porsche brake install. http://www.stoptech.com/tech_info/te...e_papers.shtml http://www.c-computers.com/C5-install/
Brake FAQ 
