Originally Posted by Dave04Mustang

Option 1: You get a dual exhaust that attaches to the Y pipe. The description of the product will say if its one of these or not. Yes you just have the stock catback removed and bolt the new one up to the Y pipe nothing else.

Option 2: True duals is having 2 separate pipes go from the headers to each separate muffler. If you want to add a midpipe (usually just sound wise H is deeper than an X and dont use an X on a v6). So after you get the stock catback removed and the stock Y pipe is removed, then you can either run straight pipes or use an H pipe (made for a V6 or custom made) and then any GT catback.

You can put a GT bumper on either when u do the exhaust or after. If you do it after you will have to get your exhaust tips realigned (raised). This was kind of a brief description because this is discussed in detail in many other threads.

Stick with companies like: magnaflow, mac, and flowmaster. Youtube will give you an idea of what different setups will sound like