It's still in the back of my 1994 f450 parts dump truck. 4.63 ratio. I think it was an open differential .I have to check again. 10 lug Wheels. My friend needed the engine and transmission. Give me a call 10:00 in the morning the 10 at night at the number and the reply box -thank you very much. The front 2x 4 axle is there as well. I possibly would trade for Chevy square body stuff.