Don't know, why would you say that? I have that size tire on my GS, 8" wheels with 4.5" BS. It is a little close on one side. These car bodies don't sit exactly evenly on the frame, so it is common to have more room on one side than the other. If I had it to do over, I'd try 4.75". I can't predict what the fit will be on your car. And yes, Coker sells them, that's why I linked it for you.
You better start measuring. Start with the wheels currently on the car, width, back space, and current clearances, then go from there.
I have 4 wheels discs on my `65 and after a bunch of grinding on the rear calipers I can fit my 15x8 steelies with a 5.5"BS on with no clearance issues now. There is plenty of iron on the calipers to grind off. PITA for sure, but it's doable.
