im comfused, like said redesign?
they dont come stardard 304?
thats not good for a header. NA still gets hot. most 304's even fail on turbo cars which is why the best are made out of 321.
i want to see dyno's too but we all know base cars with 1 part show huge numbers. these on a car with every other bolt on or these vs test pipes are the real question. id love to see a good 10hp or more from these vs oem headers and test pipes as the cats have already been removed.