The product itself is fine and does what it says. The manual however is rough to put it nicely. GM should know to use simple things like proofreading to make sure "painted" is not mixed up with "pointed". The installation instructions were confusing at best. "L-shaped edges" are not a good descriptor when both sides have them and the one you are referring to is singular. I installed the exhaust backwards at first due to this description. Stick with a side view and arrows next time. Also, using "inside" and "outside" labels for side views would be very helpful. The setup instructions are my only real gripe. To the Technical Writers: Please Do Better.