I found a 1988 gmc 3500 truck that was lightly rolled. A guy I know is selling it for $500. I went to go look at it earlier today and to my amazment, it had a sf 14 bolt underneath it. Not only that, but I always thought 3500's and k30's did not change body styles till 92. I saw the registration to confirm the year and 3500 status. Did someone swap this thing in, or am i losing it. IT'S A 1 TON THING.... IF I HAVE TO EXPLAIN IT, YOU WOULDN'T UNDERSTAND!!!