I wish I could give you an answer, but i don't know. I've heard this asked plenty of times on different forums and was always given a variety of different measurements back. I too would like to find out, in the future I would also like to go to a 17in rim. I do know that Foose makes a direct bolt on challenger rim that is 17inchs that might be a start in the right direction. If you find out please post it.

Be safe out there and good luck!