I have, but it wouldn't be my first choice. Heavy, lot of rotating mass, etc. Personally, I think a 3 speed will be a pain in the ass to gear. I would just go with a 2 speed if you want a tranny so back. Revo would be my choice. Revo tranny with a center diff and rear brake kit, along with all the RRP gears should make for a bulletproof tranny.