Found this way to get around differing reluctor coil characteristics.

General Motors HEI Ignition Module For GPZ550

And a really in depth analysis on adapting the GM module, scroll down to the bottom to read " Some notes on usage with an early 80's Kawasaki KZ reluctor: " and " Some notes on usage with an early 80's Honda CB reluctor: "

http://www.geocities.ws/loudgpz/Hei4pinGmIgnitionNotes.txt