Rear wheel/tire combo on 67 camaro

[Aintqik]

I've got a 67 with the same set up and 18x11s. At the end of the day there is not too much difference between 11s and 12s especially when you are looking at the car on the street. With a 315 it fits but its tight, but mine is dropped real low. I suppose you could really stretch the tubs and work around the rear but to me it was not worth the pain. My rear is cut to about 53 3/4" flange to flange with disc brakes, 5" bs. I'm sure it could be done but the cost (pain) was not worth it to me. The difference between the 9"s and the 11"s was so drastic I was satisfied. Its tough with leafs. Good Luck!