Hey Ralley, remember that a 10" rim is really 11.5" wide from lip to lip. Make sure when you are talking with them that you are both measuring the wheels the same way.
I am 99.9% sure you can do this as the 9.5" stock C4 wheels (everybody calls them 10", but they are only 9.5) can easily be adpated to fit a C3 with the correct spacer.
You will need the 5" back set to get enough tire inbound so that it does not stick out.
The 70-82 bodies are really no wider at the top, they just have the "mud flap" rear lower flare portion to keep the stone chips and road debris off the paint.
I think you would be bet suited with a 9.5" (inner lip to inner lip) rim on a 5" off space all the way around.
I ran a 5" off set in the rear of my car, and a 4.5" in the front. My front rims are actually 9.5" (or 10.5" outside lip to outside lip), and would stick out too far on a stock front clip. Therefore, the 5" back space would be perfect.
Hope that helps.
You can also check with
www.hvydeez.com and look at the rims they have. All in all, you are looking at about the same price as Vintique. However, you are getting a rim that is a little "different" than the pack.
Check out this yellow beauty running a little larger than stock width on a C2.
