Mopar performance distributer, as delivered advance curve?

Since you're on the dyno, get the total time for your combo that provides the max power with a fuel mixture you're comfortable with. After that, if your fuel mixture is sexy throughout the whole band, then you'll have to tune by feel til it performs the way you want.

Unfortunately it's a complicated balance between ignition timing, fuel mix, load, and then how the chassis and drivetrain performs and handles that power. Change one of those variables and you likely have to tweak the others. But if you can set yourself a baseline of timing and fuel at wot, this will help will all other unknowns in the rpm band. Plot wot ign time on a graph and make a linear line to your idle time. the final result won't be a linear line but this will get you started.

I don't remember if you have one installed, but an air fuel meter really helps with tuning ignition time as well.