The wheels are 7x15, and 8x15 magnesium Americans. It had 8 year old cheap radials in the photo, and just today I ordered thinner old school Blackwell radials for the front, and Towel City cheater slicks for the rear. I think it will give it a much more period look.
Late '69 to 72 also cruising Portland. Had 283/Muncie 4 speed. I built a 350 HP 327 for it and started breaking parts. Was worth the trouble!