So far I only have a vette servo and a Hayden cooler as far as the transmission. I've been looking at transgo hd2 for shift kit but wanted to see what you guys have done, past experiences n all. And 4l80 isn't an option yet. I guess My question is should I do a shift kit or do 4th and 2nd apply servo. I got a beast gear sunshell and pinless forward accumulator from Oregon performance