Just bear in mind that the trim ring that bolts to the hood is different between Challenger and 'Cuda.

For 'Cuda, there are a few choices, and BEA is hands-down the best.

For Challenger, it's either find an original or be prepared to work with some of the repros. That said, the ones from Harms/RestoRick (if they're still available) are probably your best bet.