15x10 steel wheel with a 4 inch backspacing on a 69 valiant

Will a 15x10 steel wheel with a 4 inch backspacing fit on my 69 valiant? I'm running a inboard spring kit. Going to mini tub it in the future. These wheels are a good deal and I'd either run them now or save them when I mini tub. Will this work?

you need 7 1/2 BS on a 10inch wheel and stock width rear