If you are planning to depend on these belts at one time or another, get new reproductions. Hook up with some buckles and send them off to:
http://www.ssnake-oyl.com/Ssnake-
Oyl_Seat_Belt_Showroom20.html
They will do them in any color and with the correct webbing and tags. National Judging will not take off points for this upgrade, as it is a safety issue. If you don't have the buckles and hardware, hook up with any Chevrolet Car club in your area, Late Great Chevrolets, VCCA, AACA, Corvair Club, etc. They all used the same buckles, NOT sure about the Corvettes, but they are possible also. 64's should be not hard to find at all. If you just want some for a daily driver, that look correct, you can save about some money buy buying some reproductions that are close to originals. They will be noticed by judges, however. Now if you had a 61 like me, you would be in deep do-do. Dan
