says "factory spec by Raider" on the front of it, laugh your assess off, i've done all the dyno runs with it, given it 2nd gear clutch dumps with a dominator on the back and beat the shit out of it. looks mint.
i paid $40us shipped

I've run pro-x, not as good, and EBC which seem to be the same. The fibers are the same dimensions as OEM, not skinny or thinner, the steels are perforated.
I have an EBC kit i'll run in the new engine i'm building for the new af, paid 48$ for it.
Also, I have a shitload of springs. I'd checked them all on the valve spring tester and they were dammn close.
I'll try and check them again and chart it in the next day or 2