Recurve ready-to-run HEI distributor?

Has anyone here recurved a drop in ready-to-run HEI distributor? I have one in my Duster and I’d like to see about optimizing the ignition curve.
Here’s one pretty well identical to the one I have.
SB Mopar Dodge Chrysler Ready To Run Ignition Distributor HEI 273 318 340 360 | eBay

Thanks in advance!