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Originally Posted by onstar
got a 2004 Grand Prix GT2. Is that the L36???? THinking about putting some KN cool air filters in for some increase HP. is that a good idea?
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Here's the best write up I can find on your car. And by the looks of it, a good site. The postage maybe higher, but you save money on the rate of ex.
http://www.highlevelmotorproducts.co...grand-prix.htm