There are still good quality made in USA aftermarket regulators in production. In my business I either supply the made in USA brand or NOS regulators. With that being said let me say that if you find a cheap aftermarket regulator then thats what your going to get. Aftermarket regulators are either made in USA or India. So anything cheap comes from India and they are in fact JUNK. If its made in USA they will always have that stamped on the base and they are very good quality regulators, however they are expensive. Most of the NOS Delco regulators were specific for either pos. or neg. ground. Todays aftermarket regulators that are made in USA will polarize to either pos. or neg. ground. Your neg. ground so you dont really have to worry about that. Like Jerry said, ebay is a good place to find a good NOS Delco.
Ken
