It's a nice-looking item. I built an HEI system for an '87 Grand Fury to eliminate the lean burn, only to find that the electrical system couldn't supply enough juice to fire the HEI during hot starts , even with a relay. I probably could have rewired this, added a relay to that, upgraded something else, but in the end I went to the junkyard, got a factory Mopar ECU harness and ballast, installed it and never looked back.