I purchased these headers for $450 USD new and had them "exact modified custom fit" by Calgary Muffler. Only used for 1 week.. This system eliminates the cats. The bung extenders are included to fake the O2 sensors.
I found the headers to look and sound nice..but I'm old and in rush hour traffic the fumes were putting me to sleep. Great upgrade gains of 10-15 HP! Will fit the Maxima 2004-2006, Altima V6 2005 - 2006.. I had them on a Altima SER
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