My buddy has 2 rearends he is wants to sell. 1 is a 4.56 geared D70 dually out of a motorhome. He said it is around 61" WMS to WMS. The other is a SF14bolt 8 lug w/ I THINK 3.73 gears. He is open to offers on the axles, send me a pm w/ your email and I will pass it on to him if you are interested.