Did MP brakes say yes or no? I couldn't tell. I believe the answer should be yes with 14" wheels intended for disc brakes. The factory made them that way. I'd check the disk brake articles on the Mopar Action web site - I believe they address this. As I remember, 11 3/4 requires 15' wheels but 11" can work with 14 in wheels. The MA article may give some specifics on which wheels work.

You might also ask MP Brakes if they can supply a template to cut out which shows (to scale) the outline of their setup to check against a specific set of wheels.