CT or Southern MA welders? Looking to have wheels narrowed.

I'll look into the steering stop idea...thanks.
As for the inner rim half--do you mean a spacer? If so, I think I've exhausted that option. :/
Not a spacer. It would be like a centerline autodrag but from the tire bead to the riveted part. That way you could just bolt it to the wheel and not have to deal with welding. I am not a fan of welds on aluminum wheels. All good aluminum wheels are either forged or spun and heat treated. Welding is like plain cast aluminum.