highboy73,here's what I did.There's a tranny shop by me who build's transmission's for Paul Shaffer's monster truck's.So I went to them and told them what tire's I'm running and horsepower I'm making,plus what horsepower I'll be running in the future.This is what they did to my C6.5 clutch direct drum with torrington bearing's(3 clutches is stock),hi energy 1-2 band,bushing kit,****** washer's,high performance clutches,Trans king low gear set with steel planataries,2.72 1st,1.54 2nd,Trans king reverse pattern manual valve body with billet servo,2400 stall converter.I also put 2 tranny cooler's on it to keep it cool.It run's at 165-170 degree's.It's good for 700 horse.They had to machine the case some so they could fit in the extra clutche's.