Anybody running 17" Cobra Bullit rims on a Duster

If the hub bore in the wheel is like 73mm, then they're set up to use a 73mm hub ring to adapt the wheel to whatever bore you need. That's good news as hub rings are easy to get and cheap, whether you're fitting a Ford or Mopar.

The backspace could be an issue, but it might work in your favor. What is the BS on your wheels? I like the FR500's, too. They look like they'd be nice and light. Are these wheels pretty light, too?

Clair

They seem light but i didnt weigh them. They are for my dart but it has corvette hubs i redrilled to to 5x4.5 so they fit fine on that car. I want to get a set of cobra R wheels for my daily driver 73 Valiant just want to make sure there are no major issues. 5.94 backspacing here is a link to them.
http://www.americanmuscle.com/black-fr500-wheel-17x9.html