someotherguy
Even more awesome in person
A stock 700R4/4L60/4L60E isn't up to the job, sure. A properly built one can take a lot of abuse. Just depends on where you want to spend your money and what level of work you want to do personally. 4L80E is a tough transmission for sure but requires the controller, wiring, driveshaft work, etc. and also takes a little more power to spin so it'll eat up some of the power you gain with your engine mods.
Richard
Richard