Hey I have 17x9s Cobra R's on my 65 Mustang Coupe and I had to buy wheel adapters and spacers on mine. My adaptar had to be drilled so the nut off my old hub would fit the shaft on the older hub....I can find out what size spacer they used if you need to know....just message back...check my car out
STR864's Ride ....the rims make a big difference in appearance I think