Cross pipe would help sound but also improve the efficiency of the system. Definitely get the x pipe. Do you have a cold air intake? If not, I'd recommend the Cold Air Inductions intake; top quality, easy to install, looks great and sounds great. And it not only improves the sound but adds a bit of power too.
http://www.camaro5.com/forums/showthread.php?t=68894
That isn't my install but it shows the system.
Oh and welcome to the Camaro family and to Camaro5.
