This exhaust took over a week to even arrive in the mail for shipping. Then the upper O2 sensor did not move in or jump out after two turns during installation. So we pull the center tube all the way back to find the weld in the threads, which also required us to use a small grinder. So common sense dictates that they rushed the assembly and welding and didn't inspect it very closely before sticking shipping labels on it. Otherwise it fits well, but I guess we'll see if it holds up.