Sorry, but I have to add another review after working on our 2007 Dodge charger Hemi over the weekend. 3 years ago just before coming to Tucson, we had the best muffler shop in the Temecula CA area, Canyon to Muffler, upgrade the CC exhaust he ran 2 and a half bacfrom headers, uncluding cats and brand new Edelbrock racing mufflers at the tailpipes. Well, just 2 days ago before we send the car to yet another mechanic, thought install new oxygen sensors the Dodge doesmuch better this way. So I'm to done with the upstream of O2s, (close to headers), but when I try to find the downstream O2s, they are missing. Not just the 02s no bungs (mounting point) no O2s gone. So the Dodge depends heavily on data from upseteam and downstream oxygen Sensors for the vehicle to properly function at peak efficiency. This is a real reason the. Car runs like crap. To make matters even worse. The beautiful, professional work by Canyon . muffler (2 1/2 inxh from cats back ( $1299 ) n8w looks like someone raided a junkyard (different sizes tacked together) hangers improperly done, the system rattles as soon s the car is started). In other words, in addition to stealing muffled system parts, it looks like a 9 year old dis the install. So I've had about enough and are going to call both Tucson Sheriff and Police departments to report the thefts and damage done to my wife's car. If by chance one of both depts declined to help, I vow to call every radio station every TV station, and out this shop. All HC'C needs to do is return the stolen parts, and pay for the exhaust restoration. If they are smart they will do this. If not I'm coming after them read more