Ditto, D60 out of a chevy or dodge, If your going to stay under 38" tire, D60 rear as is would be fine. Once you go over 39" tires, you will start pushing the stock 30 splin shafts, to up grade to 35 spline is a PITA. go D70 or 14 bolt, both can be bought for next to nothing, both will handle a 42"+ tire stock.