You rang? We can use this VM service to answer your questions. I'll probably never get around to cleaning out my PM's.
Can't send you a pic, but the wheels are deeply offset, if that is an issue. IIRC they came off an old 9 car when class 9 was 1200cc not the Challenger Class that took over the 900 numbers in '84.
They are at a friend's shop an hour and a half away, with a really beat set of WA Sandblasters 913s on 'em. I never mentioned it, 'cuz the tires have been sitting in the sun for 25 years.
They're still holding air, and currently holding up a Baja Bug project of mine.
I plan to be going by the shop next week, I'll take photos then and send them your way.
Been following your search several years now, glad you finally found some "fresh" ones.
BTW, did you see the VM's below?