Surprise, surprise, after forty plus years from manufacture you have bent wheels. I think the tire shops are trained to say that to get you to buy new wheels. I'm in the same boat as you, two bent wheels. I would split a set with you, but am a long way from Bakersfield! In the meantime, I put the worst one up as a spare and second bent wheel is on the rear passenger side. The thing that bugs me is no one can straighten a bent rim, won't even touch it! Tires look boss!
Good Luck!
Good Luck!