| i haven't but i do know that there are some companies that have programs that can help you figure out optimum collector length and stuff like that. specifically you should check out spd and burns stainless
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92 notchback, 430 rwhp 11 psi Vortech s-trim H.O. kit, heads, cam, drag suspension, bfg drag radials.
11.74 @ 117 mph, spinning
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