HEI old school distributor

This may not be what you are looking for, but Davis Unified Ignition sells a Mopar unit that looks mostly stock. I ran one of their other style units on a Ford back in the day, and it was great . The plus is you give them your engine specs, and dial the curve in for you. They however are not cheap.

https://performancedistributors.com/product/dodge-tri-power-distributors/