I have. 1966 coronet 4 dr with 14x5 steel wheels. I want to up size to 15 inch wheels to make it easier to do a front brake conversion. Not sure if I should go 15 x 6 or 15 x7 and what offset I need. Want to keep it stock looking but make the brake conversion painless. Did the original 14's have a offset? Will 215 70 r tires fit fine front and back? Any help would be apprieciated.