Front tire dilemma

The 15 x 6.5 big bolt factory ralley wheels have a 4 1/4 backspace. Same backspace as a 15 x 7 big bolt factory ralley wheel.
The 1/2 inch difference is all on the front , that's why a 15 x 7 ralley wheel trim ring will not fit a 15 x 6.5 ralley wheel. I don't like anything wider than a 15 x 6.5 wheel on the front of an A-body , anything else sets out too far...

Frank