[Rev]

Jeff65, that's a good explanation of electronic ignitions. As to the gas mileage/performance question, I have a Mallory Unilite distributor and a ProMaster coil. I got 12.5-13 MPG with that. After adding the Mallory 6-AL ignition (capacitive discharge multiple spark) box, mileage improved to over 14 MPG. I couldn't tell any difference in performance really (maybe slightly better mid range response). G-Tech 0-60 MPH times were the same before and after the new box. Hope that answers the MPG and performance questions anyway. On a side note, I think the MSD components are better than Mallory, but they cost more too. If I was doing it over again, I would choose MSD.

Rev