One way to do it is to use wheel adapters that have the axle pattern on one side and the wheel pattern on the other. If you pursue this avenue, INSIST on BILLET adapters. Cast aluminum adapters will get you killed. Here's a large supplier of billet pieces.....
http://www.ezaccessory.com/

Here's their contact info if you want to find out what's available before you purchase a differential.....
http://www.ezaccessory.com/Articles.asp?ID=1