I have a 69 Barracuda convertible, 318/auto drum brake car with 5 on 4 bolt circle, and stock suspension. I am investigating billet adapters to go to 5 on 4.5, for 15x6 or 15x7 wheel choices(AmericanTorq Thrust first choice). Street driven only, no racing.
What backspace and offset should I get to accommodate adapters and avoid any clearance issues? Any other concerns to address?
Thanks!