Just a thought, I switched to an MSD 10 box with the digital add on controller from a 7AL3 and it was worth real power on the dyno using ethanol. The ten box has 700 MJ spark power firing 30 degrees rotation, while the 7's have 160 MJ firing only 20 degrees. With the alky, high pressure and high fuel load, they work well. It's hard to blow out the spark if it gets rich, and the extra 10 degrees firing helps with alky too. You can curve them and add all the digital functions with the external controller, but you have to use the modules in the box for the 2 step.