The old rims had so much rust on them that the tires wouldn’t seat and hold air and taking the tires back off tore up the bead. (The tires are new old stock and kind of hard rubber, anyhow.)
I’d seen sets of take-offs at the local Chevy dealership so I called the Parts Department to see what they had available. Nothing.
But it turns out the guy at the counter has been collecting wheels for years and has a bunch in his storage. Like, lots of wheels, he says. The stock rims are 14x7 with a 4-inch offset. Here’s hoping for some 15x7s with a similar offset. I want to fit 205/70/15s.