I'd like to order a new set because the ones I have are made of paper. The car is a 87'.

I don't know what the Corvette dimensions are, but the Fiero hub is 57.1 mm if that's of any help. I've had the best luck finding rings at Tire Rack. It's best to call and talk with them to get what you want. My local tire stores wanted $10 each for used ones. I got a full set of new ones from Tire Rack for less than $10, including shipping.