They're custom made from Diamondmotorsports. Diamond is now out of business. There is the comapny that ls1miata used, that makes a swap header, but, I don't think it's a long tube design. ls1miata will have to say for sure. The key to traction is gear ratio & tire size. If you tub the rear, you can get larger wheels in, but, then will need a 5 lug hub, in order to find wheels wide enough, which is another story. Although, I think there is now a company making a 15"x9", 4x100 wheel. Am thinking that this was discussed earlier in this thread as well.
Anyway, turbotocoma is better suited to help with traction related to your higher powered set-up. I am not really sure what will work. Your car will be bad ass for sure.
__________________ LSX powered MUNSTER.....Mod's list? 5 lbs per HP with a sh!t load of low end torque...Friend to all car people...Thanks LS1Tech
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