Ignition for 360 magnum

Haney said

So I must have been under a rock for a while. Never seen a HEI 4-Pin Transplant. Is there more info on this somewhere?

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HEI Electronic Ignition Retrofit How-To - Slant Six Forum
GM 8 pin HEI Conversion pics
I’ve done both 4 pin and 8. Works great, love how it starts, just tap the key. That was the only change I made. Later I did put the ignition on a relay. Really cheap and every parts store has these ignition modules.