Originally Posted by PR1AWRet

When I had my E53 4.4 I replaced the driveshaft with the longer splines. Put some grease in there after getting most of the rust off the Xfer case front output. Mine weren't stripped but almost. I pulled my Xfer case about 3/4 to 1 inch keeping the mounting nuts screwed on about half the nut threads. Since your down there look at your Giubo Joint/flex disc. BMW only, I put in a cheapy in and a few months later it was ripped.