Review on Flowmaster 52456 Super 50 Muffler by Mark Hayes

What's wrong with the Amazon auto parts verification program? I got it wrong, more than right. They take a lot of people's time and money. If you don't know if a part will fit a particular car or not, then don't say if it will fit or not. It's not about trailblazers. To be absolutely clear, your entire selection of Trailblazer mufflers will NOT match any Trailblazer ever made. There has never been a pioneer with a center OUT and INS offset muffler. However, these are your options. They are actually saying that the right muffler does NOT fit the first mover. So I spent $60 at the muffler store and now I have to send back the wrong muffler and buy the right one. Their car test system has failed me 19 times out of 21. This is unacceptable. FYI --- If you have a trailblazer, our mufflers are (factory) 2.75 Center IN, Offset OUT. (2.50 will work) After lots of questions and research, 3.00 is too big and you will have back pressure issues. Don't let the stores lie to you and tell you they won't.