Did Chrysler have rust problems with the 76' Darts, Dusters, Scamps?

I don't think so, BUT. The Auto industry was using some really crap sheet metal back then. I remember working on a Chevy rear quarter at my dads weld shop. It was a favor for one of his friends. The quarter had rust holes in odd spots, not where you would have a moisture problem. I cleaned the area to bare metal and I swear they had slag rolled into the sheet metal. It would rust around the slag "plug" and leave a hole. Saw a Jeep Wagoneer the same way. I don't remember seeing any Chrysler products doing that, but look for the usual spots. Check the unibody rails, floors and rear quarters. It seems to me 75 was the last really good steel for Chrysler.