your thoughts ? 17"-18" wheels with 10" rear drum brakes ?

With 17’s it shouldn’t be too bad. With 18’s the 10” rear drums will look a little small. But it does depend on how “see through” the design of your wheels are.

I ran 11x2.5” rear drums on my Duster with 18” wheels, the nice thing about the 11” drums is that the finned version has a pretty large outer diameter. Since you'd got a pretty large B-body it wouldn't be a bad idea to go to the 11" brakes anyway. You can run the later B/R body 11.75" rotors on 73+ spindles up front. The 11.75's fill up a set of 17's really well, and don't look bad at all with 18's.

This is my Challenger with 11.75" rotors up front and the 11x2.5" drums in the back, with 17x9's and 275/40/17's.
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You can see what I mean about the 11x2.5's and the finned drums, they're big.
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On my Duster with an 18x10" rear wheel
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And from a little further away. Painted black the drums get pretty hard to see anyway. And the Enkei RPF1's don't hide anything, they're very "see through" with the thin spokes.
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