Rear End for 1989- 1993 Dodge 350 Diesel Dually

I am looking for a rear end for a 1989-1993 Dodge 350 Diesel Dually pick up. It has a Dana 70 with a ratio of 354. I have been told the rear end will fit from these years of trucks. I really only need the housing for this rear end, but I imagine nobody wants to sell just that, so am looking for whole rear end. If anybody does have the housing,or rear end just let me know your price & where you are located. I am located approx 90 miles N. of Detroit,so the closer the better.