I can get a 14 SF next to nothing here in town and would like to keep my '87 V10 at 6 lugs. Since the rear is narrower than the front, has anyone ever installed a spacer to fit a semi-floater rear from 8 to 6 lugs? How did it fit? How thick of spacers does it take to get the rear track the same as the front? One other question: has anyone ever done anything about the 7/16" lugs on the 1/2 tons as far as "upgrading" them to at least 1/2" studs?