Mopar 'HEI' Drop in distributors.

I prefer the GM 8-pin HEI, which was the last version (85-95 trucks, 85-93 V-8 cars). A GM cable connects it to the GM "external coil", so grab all that, plus the pickup connector. It has sealed connectors (Metripak type). Triggers fine from a Mopar e-distributor (~1971+). The timing can be commanded from a modern engine controller (Holley Commander 950, Megasquirt, ...). To go further, grab the GM knock sensor and module, which the Holley can use. The knock sensor can screw into your block drain.