3.07 for the auto and they are called a dana 61 and a dana 71 both manual and auto used the 205--i think the manual 205 only fits on the getrag-and the auto 205 will fit on any dodge automatic...and if it is a manual it will be a 3.54 gear---there were a few one ton 4.10 gear ratios put out there and there also were some single wheel one tons....you need to learn some more about the deal...