Well I'm in the process of building a turbo coyote for my new edge but need to beef up my 4r70w. Right now it has level ten 1000hp rebuild kit, Fairbanks shift kit, a large cooler, and a 3800 triple disk with lockup. I kinda want to have a trans break but I'd like to have the auto shift. I plan on hardend stub shaft. Anyone have any experience with sonnax direct drum. What else would you guys suggest.