I run mine at 34 locked out with MSD. Starts easy and helps it to run clean at idle and low speed. A modern grid where you could get it to run in the 40's cruzing would work even better as long as you could trust it to retard when you open throttle.
Interesting thought. I run a plate that FBO makes that limits the advance on a Mopar distributor. You can set it wherever you want. I could go big on initial and set it up with only something like 10 degrees total mechanical. The vacuum advance adds 9 when in use.
