Not turning what driveshaft right? There is the driveshaft that goes from the tranny to the rear diff, and that wouldn't effect anything, and then their are the cv axles that comes out of the rear diff, and power the rear wheels, but again, not sure exactly what that means. Seems odd to me. Just don't want you to get screwed. It would suck to dish out that money (which $400-$500 is crazy for an open R160 diff) and then have to have the center diff worked on too. I might be wrong, this is just my .02.