If you install stock wheels (or similar backspace) with 165's there is lots of room inside the wings.
I removed the stock long axles in my '68 and installed SAW short race axles, and some 6" wheels. However, when I reinstall the stock wheels (to save the M&H rubber for racing) it really looks goofy. I'll see if I can find a photograph...found one. It's not clear but there is about 3 cm between the rubber and the edge of the wing (fender):