Yep, the Mustang 5-lug rims will bolt on, since the bolt pattern is the same (5x4.5"). Only problem I may run into is with the center hub, it may need to be shaved out slightly to clear the rotors. The backspacing works out perfectly too (5.5" on an 8" wide rim, which is what my current rims are).
Eric, I really like the Cobra Rs, just not sure I want a 9" wide rim; I think it'll track the ruts in the road too much, and that sucks with two solid axles.
If I can find a used set of 17x8s at the Etown Swapmeet next weekend I might come home with them.
Thanks again for the opinions guys!