Ballast resistor-> 4 prong to 2 prong

T56MaxTorq said
I've always had luck with GM HEI. Cheap and only 4 pins w/ ground. Most important thing is to use a quality 12v coil and to bolt a heat sink with transfer compound to the unit, or bolt it to the fender away from headers. HEI is cheap and compact, and if you're interested, the 5 pin unit has a built in spark retard of 10 degrees by grounding the 5th pin. Good for hot restarts, high compression small blocks, or pinging up a hill on hot days, bad fuel, etc.

Thank sir but the problem with GM hei is that there are a ton of Chinese distributors and no way for me to know a quality product, I searched into these-I quit when Mike Liston said that the Chinese are making indistinguishable MSD copies-to include 6AL boxes

-which one do you get?