Anyone familiar with these altermator's??

[oxsign 5,000+ posts]

Yes, I know it's ebay, but for the price if it puts out what it says.

250Amp High Output Alternator for GM GMC Chevrolet Chevy Cadillac Hummer 250Amp | eBay

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[NinjaBass]

Yes, I know it's ebay, but for the price if it puts out what it says.
250Amp High Output Alternator for GM GMC Chevrolet Chevy Cadillac Hummer 250Amp | eBay

Just look at some some threads started about powermax usa. Pretty much crap from all the stuff I have read on forums