The rear axle in my 1999 2500 4x4 w/dana 80 rear is shot... repair shop tried to get reman. unit from www.jasperengines.net but it was going to take two weeks to get it as they have none in stock. could someone tell me where I can get a new or rebuilt axle for my truck? I would consider a disk brake rear and I can do the necessary modifications. Thanks I'm kinda in a hurry .