Maybe this will help with the explanation of GM HEI and the cloning by the aftermarket (cheap and easy) as most DIST HSNGS most likely are cast (possibly machined) by one manufacturer in CHINA.-
There are two types of HEI DIST used, according to fit and need in GM vehicles, the HEI (coil in cap) and the DUAL POWER (free-standing coil). While both are cloned by the aftermarket, the DUAL POWER design seems to prevail in the FORD style, even though you will see the coil-in-cap design also.


This is what I was trying to get across. Wether you use one is entirely your business, but I believe some would want to know. Maybe ask the seller if DELCO parts will fit as the CHI-COM will most likely a have a higher failure rate and most likely the DELCO service parts will have a better purchase price and warranty.
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