Strange as the 10" rears I have fit. Bought new in 2014. Looks like you need 1/8" spacers?
Did I not post pics before?? If not I'll take a pic of rear when I return.
IT may of been in your thread "can you id these wheels"? I remember you saying the older tt's dont clear calipers. I have 6" and 7" on a C2 that clear and 7" + 8.5" that clear.
Sounds like they are destined for a Mk1 Camaro with drums.
By how much do they foul? - is grinding back the calipers an option?