Now I notice they are aluminized steel what are the flanges made of mild steel? Guess you could get it coated. Is it an Import like GN1 or is it made here in the good ol' US of A.? Have a old school Hooker 2.5" ext DP that' been on the vehicle for 16years and continues to work just fine. Was thinking of going better and allow less backpressure. Wished some of this outsource parts were made in Japan,Korea, even Mexico. was hoping that opening the exhaust would get less backpressure, get rid of the Tornado.