I have a DC Power 180 amp V-belt alternator on my Monte that I bought about 10 years ago and it still works flawlessly, for me it was all about idle voltage (130 amps) since the list of power drawing accessories on my car will overload any stock style alternator in this amperage range at idle, they also now offer many colors as options now.
With everything on I still have 14 volts at idle, this is one of those you get what you pay for things.
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