[FirstOwner69]

After doing a couple hours of research on Corvette, Camaro and Chevelle forums, it appears that the model number has nothing to do with belt color. The date code (for example, 45-A-68 shown in my post#5) does indicate the week (45) and year (68) that the belt was made. The letter (A) identifies the supplier's plant or production line. Some cars, such as first generation Camaros, did have different buckles for low and high trim levels. The Camaros had buckles like ours (but not our 67s) on the lower level trim packages and brushed stainless buckles on the higher trim levels. I know from personal experience that Olds also used the brushed stainless buckles.