been lurking here for awhile until the right deal came along, and I think I've found it! 175,000 on an '06 3500, with what appears to be no more rust than usual. i'll be going to do the inspection on it in the next couple days, and I've got a good handle on what to look for insofar as black death &etc, but was just wondering if there is anything specific to the 3500 rear end that I should be particularly mindful of. cheers!