Rebuilding 4l80e

[68bird]

I have wanted to put a 4l80e trans in my firebird for a while. i recently was given a 1995 4l80e and was told that 2nd and rev. were out. Fluid is black and smells burnt so it really does need rebuild. My question is this. If i have the local shop rebuild my tranny, what special parts do i ask for? ie kevlar bands, sprags, etc.... it is going behind a 427 bbc with about 500 horsepower. what controller works well and is there a 2500 to 3000 stall available? Any help would be greatly appreciated. I don't want to get ripped off buying what i don't need, and don't want to break it either. overkill is always a little better. thank you -wade-