"Some Positive Feed-Back on your productt of dual Borlas. 3rd performance car, 3rd set of Borlas! 2006 350Z with Catbacks and sound is great. Smooth transitional sound with Borls's unique growl up tthrough 6krpm. Impecable quality with quality ans so easy w installation. Wish the header package could be installed as easy as I would insatll that as well. Nissan design challenge there, not Borla. Lifetime advocate for Borla."