I really have not heard of anyone being all that happy with the alumunum rad, there are those that like it, but the people that bought it expecting it to solve cooling problems have not been happy. I cant tell you off hand what a new one from HUMMER with cost you, but I would suggest checking ebay. They pop up from time to time, usually because the seller installed an aluminum rad.
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1997.5 Black Slantback
The Sole Remaining God Father
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