COP Ignition Development

You might have a winner. I am surprised nobody else has made a COP retrofit, via a re-purposed distributor. COP's would look cool on my slant. It is particularly hard to mount a crank pickup on a slant, so this eliminates that need. You would also need a manifold pressure sensor and probably a user-interface to allow adjusting rpm and vacuum advance. Even if just screw pots, that is much easier than changing springs and weights in a classic distributor.

There was an almost-product, termed "Rabid Gator" that was a "spark control" box for use w/ a GM 8-pin HEI module, but the guy got a better day job and no time to see it thru. I recall TrailBeast has been pinging you for a similar box, but this approach moves it up a big notch.