1-3/4 primaries/3 inch collectors/High Velocity Merged Collectors/Power Spike. No street driving and literally 10 passes on them... Not a ding or scuff. They look no different than a new set that have been installed, the car started and then removed. The current build is simply going for more cubes, more compression, bigger heads, a lot larger cam and a 2nd power adder... So I'm going to 2 inch Kooks. No clearance issues other than needing healthy motor mounts (pretty typical for 4th gen headers)... I had a cracked & flattened driver side mount and it only had a mm distance between the steering shaft and primary... New mounts and it's golden. Car made an easy 600rwhp through these with a baby cam.

SOLD

 

FYI - These are "race style", so there are no emissions fittings... Just o2 bungs... Please add 3% for non-bank transfer paypals. Thanks!