Here's an old thread on it from 2009. Sounds like a member here had a business doing custom emblems. There's mention of a 505 magnum emblem:

https://board.moparts.org/ubbthreads/ubbthreads.php/topics/313538/500-stroker-emblems.html


Also, seen these guys at GNRS every year:

https://www.billetbadges.com/