So I am ordering 15x7 fronts and 15x8 steel rear repro wheels for a 70' charger, I have a couple questions, you guys may know the answers to and save me some trouble, thanks in advance..

First, I have the choice of 4" or 4.5" back spacing for the 15x8 (5x4.5) rears?

Next what size tires fit comfortably and look good in the b-body wells? Pics and size info would be great if you could share your experiences, thanks again..