For our older non injected ecu cars we need to run the early model GM module...refered to as the 4 pin.
Yes way back in the 70s they where very reliable....more reliable than damn near every other manfacture ford toyota what ever....Still use hest sink when install but far more robust when exposed to heat and the big killer vibration.
HEI modules got a reutaion that spilled over undesrvely to the GM modules
The GM module was/is used as an upgrade to the dodge modules and also popular with high reving motorbikes and rotary engines.
Yes one can still buy GM HEI 4 pin modules and dizzys
And up to the 1990s they where improved upon....as to late than that ,or if now made inChina I do not know and cant comment on that.
If they are made in Korea then I would assume like other korean products they would be Quailty.
Are there any other companies that offer complete distributors and/or other parts that equal or exceed original gm quality?
It seems GM people tend to write off the GM moduale in favour of aftermarket units, yet non GM people favour them?????
And yes there are aftermarket companies that market their products with so called "independant research" that when one follows up the pararameters /intructions for that "reseach" it becomes aparent the methodolgy determines a preconceive outcome suitable for their propaganda ...sry marketing BS.
For any street /strip or cruiser I would and do go GM every time
For high end track..which is usuallt dedicated track with locked timing high end stuff then go magnetos , crank triggers .....
What works on the track usually is unsuitable for street...or in the case of MSD ideal for they guy who doesnt take care of HT leads maintance and a multi spark at low rpms is a great patch fix to cover up lazy ness.