Any magnetic or hall effect dist (or crank trigger) with advance locked out, or a 1977+ Lean Burn Dist. The MSD 6530 Programmable, Digital 6AL-2 ignition box, and a MAP sensor.

With the programmable box, you can dial in the advance curve with a laptop based on load and RPM. Easier, quicker, and more precise than messing with mechanical advance stops, springs and vacuum can adjustments.
It also has two programmable rev-limits and retard for N2O or Boost.
I haven't tried a lean burn Dist, but the choice of the two pickups may make phasing the dist easier?