My ultimate plan is a LS2 shortblock, ported 243 heads and Fast 102, something like a BTR Stage 2 or 3, 1 3/4" headers, 3" collectors, dual 3" into 4" merge to my Duramax exhaust, Yank SS3600, extremely built 4L60E, 4.11 gears, Auburn locker, hardened axle shafts, and 31" tires. Texas Speed and...