Purchased a 64 Riv last spring with original hub caps. Since I do not have the technical knowledge or mechanical experience to know what to look for, I need some assistance and advice- I'd like to replace the caps with wire wheels. The Buick Skylark Wire Wheels at hobbycar.com site look great> How do I know what to ask for with the 5 X 5 hub, would a 5 X6 or a 5 X7 fit? Although I am not mechanically inclined, the car I bought was a duplicate of the one I picked my girlfriend up in 47 years ago- I fell in love with both, kept the girl but had to sell the car with a growing family. 47 years later, me and my girl have our dream ride back! It is beautifully restored in mostly original condition, matching numbers and NO rust! A real classic!! Any advice would be appreciated!