Selection of a body after mkt rims?

scuba0331 - If you're talking about the classic Centerline Autodrag style wheel, they should be able to make this wheel in just about any width and offset you need since it's a 2-piece wheel. You just need to measure very carefully to make sure your offset is correct to center the wheel/tire in the wheelwell with your B-body rearend.
Of course, you can also get the B-body rearend narrowed to A-body width or narrower.