I have a 1975 F-350 Dually. It has 8-lug 16.5" rims. I need new tires, so i want to switch to some 16" rims in better condition. It has the tapered lug nuts every other one and i can't get a straight answer on what year trucks I could get a set off of. I also know some dodge rims are supposed to fit as well. I need new tires and 16.5" are way too expensive when i do find them.