d300 and passenger side drop d44 one thing i will tell you if you use a dana case or atlas like the 300 you will have to cut the floor to make it fit, the gear drive cases are kinda tall unlike the chain driven cases. i have flipped dana 300 in the 89 "savage" chop and ive got a 3" body lift and the t\case is against the floor. no i'm not leaving it that way gotta cut it. I did have a bronco dana 20 which is driver side drop and that fit a bit better but with anything less than a 3" bl the floor will need to be cut to fit it aswell, i bet a atlas would be a fair bit of cutting too. Once you go gear drive you won't wanna mess with anything else so beware. <img src="/forums/images/graemlins/smile.gif" alt="" />