Electronic ignition help needed !!

67Dart273,
Yes. With the Commander 950, you input a spark advance map, I recall as a function of rpm and manifold pressure. This is the advance to add to the advance already in your distributor, so it works with any distributor (w/ or w/o weights or vacuum). It is then simple to tweak your advance on the PC, rather than playing with weights.

It also can monitor a knock sensor to retard the spark, say 5 deg, then creep back up slowly in timing until knock is again sensed. It is real easy to add that, just steal the knock sensor (1 wire) from the drain plug of the GM engine, plus the conditioning module. Take claims that it must be the exact same engine lightly since I read that GM used the same sensor and module on many different engines.