I think by then Kelsey Hayes had the rivet thing down pat. On the corvette front, it was always said checker cab was a place to look for the corvette wide wheels, but I think it was an urban legend thing.
yep, on a low production run, its easier to machine vs a new casting. Cool info on the wheels, I enjoyed. They likely are pricey, the wheels for the corvette (most got tossed) are going still in the 3K ish range. I have not hugged mine in a while