Custom distributor curving.

sorry for the ignorant question but could the same concept be applied to a electronic ignition distributor?

Yes, absolutely. It can be done to any Mopar distributor. I don't have
pictures to share on any others though. I bought a rebuilt unit for 37 dollars
and redid it while the bone stock one was still in the car. It is not that
hard to do to only limit the total advance, adjusting the spring rate
is a little more trial and error unless you have a distributor machine.