HEI in Mopar ECU casing

Due to an over-rev, I now run an MSD-6AL in my car, but since it takes up no room, I left the stock system in place. I can switch to factory electronic ignition in a minute or two by connecting wires.

I have a plug n' play HEI harness that trunkmonkey holds for safe keeping, in case the factory electronics and the MSD both crap. The HEI is so small, there's no reason not to carry it and again, it's a plug n' play.

With a llittle forethought, you can run three different ignition systems in under a minute with only 4 wires to unplug.