Talk to Tim at FHO is you're going to go that way. He should have the correct ATI damper in stock as well as the TDC pointer and trigger pickup assembly. I think I'm the only person that makes those parts although you could also fabricate your own setup. It isn't rocket science, but you do need the pickup in the correct location for the timing to be correct and it does need to be adjustable since moving the trigger is how you change the timing. Rotating the distributor only changes the rotor phasing when you use a crank trigger.

https://arengineering.com/home-page/crank-trigger