15x7 cop car wheels

Hello,

I’m looking for two 15x7 BBP 4.25” (or 4.5”) backspace steel cop car wheels for the back of my 1971 Plymouth scamp. I just need two for the rear, I’ll be going with a different width for the front. I’m located in NC near the Charlotte area. Would prefer something relatively local but I’d consider shipping (cost depending).

Side note: I’m not sure what width wheel and what size tire to run for the front of my car. Any help would be appreciated

Thanks