Stock 4L60(LS) transmissions are faulty above 400rwhp, they break like eggshells. 6 speeds hold up much better for racing. New GTR's and the like are on another level, not even comparable.
347ci LSX(Forged Internal LS1)
D1SC
Comp Cam 224/228 113
Trickflow Heads
Ported 92mm Fast Intake/Throttle Body
Built 4L60e - 3600rpm Yank Stall
Racetronix 46 Injectors
American Racing Stainless Headers/ Y-Pipe
Magnaflow Cat-Back Exhaust
New Motor Mounts
Bilstein Shocks/BMR Springs
Nitto DR's 17''
Made just over 600rwhp on a Mustang Dyno at Speed Inc last season.
I'll do you one better than some stills, here's a video of me and a buddy's Monte Carlo, Grudge Running at our resident track this past season. His homeboy doubled up when he saw my tires and still I came out with $400
Theres tracks in Joliet(Route 66) and a resident track in Morocco and we go to that one because they aren't as strict.
I'm getting ready to go back out again in a few months with better tires/suspension.
I haven't done shyt to the inside of the car, still stock interior other than safety stuff.