I used a 4x crank trigger, and the L31 distributor. I'm thinking I aligned the crank position on the trailing edge of the crank trigger (its been a couple years ago since I prototyped this setup) . I set the crank sensor 50% off / 50% on the trigger wheel. I attached a couple video's of the prototype running an engine.
http://i239.photobucket.com/albums/f...nkPosition.mp4
http://i239.photobucket.com/albums/f..._0411SBC-1.mp4
dave w