I got a very low mileage ATR 3" single shot with the correct clamps and pit bull muffler it's 304 stainless steel which is a way better grade than the 409 stainless that the pipes system is. Also the ATR system was made here in the USA unlike the pypes system and the gn1 dual exhaust. Last couple times I got anything from hooker it was made in Mexico. Maybe none of this makes a difference to you guys but it does me when I have a choice