HEI in Mopar ECU casing
I've run mine for the last couple of summers. Car is tore down for paint, now.............
http://www.forabodiesonly.com/mopar/showthread.php?t=255877
Mine is as simple as you'll get. A GM 4 wire module mounted right on the firewall, firing a factory Mopar coil and triggered by a Mopar / Accel distributor