advanced timing school please

what would be my options for aftermarket distributor? id like to have one that i can recurve with the kits. i thought the one that i have now is aftermarket. i tried taking it apart just a minute ago with no luck. upon spinning it, i could see the springs which look like they can be changed, as well as the slots. idk if these will help at all but i took a couple pictures

easiest ones i know of to adjust is the msd. everything is on top. springs and bushings to adjust curve.

that stock style one isn't hard to pull apart.