My '66 is a short bed "Style Side" and I currently have 15x8 Rocket Racing Injector series wheels on the rear with 3.75 back spacing with 255/70-15 tire and all clears just fine but my question is has anyone put 15x10 on the rear without any issues and is so what is the back spacing? I wou...

You got 88% (37 right out of 42). That's was fun.....did better than I thought I would!