couple comparison vids...
30 punch 4.10s took about 7 seconds from 30-80
30 punch 3.42s took about 6 seconds 30-80 spun a ton!!
50 punch 3.42s pretty fast up top but needs a stall
its kinda weird it spins a lot more with 3.42s and was faster but i did have the old stock trans with the 4.10s...