couple of months ago I purchased a set of the headers...my primary cats are heading south. I have to say Ive been happy with the product. I did not install them myself, had a custom muffler shop do that...he said the install went great, no problems to report. As for hp gains...Id say yes...feels more peppy up top. Sound is more deep, which I like, and no drone to report. My car is a 2004 2.7
Krista
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