Here are pics of my 71 El Camino with base C6 18's and 19's. Tire sizes are stock, 245/40/18 and 285/35/19. I used 2 inch adaptors in the front and 2.5 inch in the rear. Plenty of clearance on the back, I can fit my fingers around the whole tire. No rubbing issues anywhere. The jury is still out on them for me, but they are growing on me.
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