modern challenger wheels on earier mopar ?

About the only late model alloy wheels that have the correct spacing and pattern are jeep wheels, and that's changed/changing. Just buy the right wheels. That being said, good luck finding an online bolt pattern guide that is correct!

They are the right bolt pattern but the center bore is smaller...ran into this issue with the 17x8s I'm running. I had to use a rotary bit to open up the bores enough to fit.

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Hub concentricity isn't your thing, is it?