Swapping rear gears and need to know what rear gears I should run if I hit it with a 125 shot. I want to keep shifts 6k or less, and cross the traps at under 6k (stock bottom end). Would 4.11s put me over the top?

Here's some info on my current combo:
355
195 afrs (68cc)
air gap intake
comp xe 288 hr
750 dp
1 5/8 headers
KB flat hypers
Th-350 w/ transgo shift kit
TCI 3500 stall
10 bolt 3.08 posi
3500 lbs w/ driver
275/60/15 m/t drs

 

See if this gets you the info your looking for.

http://www.nationaldrivetrain.com/calcs/dragcalc.html