Is there any difference with regards to backspacing on Imperial wheels from the slabs through formals? I need 3 factory wheels for my new blue beast (68 Crown Coupe). I found one on a 68 and two on a 73 at the yard this weekend but didn't pull the trigger in case there was a difference on Budd vs. single piston cars. I've Google it and can't find any good info.
Thanks guys!
