I have a 426 but 6.1 blocks are hard to find.

so a stroker 5.7, eagle heads with valvesprings, stock rockers, cam 600/250 range, good pushrods, the knockoff drag pack intake with porting would get you there.

with my 426, I shift at 6800 with 3.55 gears and cross at 6100. I just put 4.10s in though. and I'm 150-200 lbs heavier than your at.

Steff spun his pretty hard but his engine is a 400 but is heavier than me and runs the same number as us.