Unless you're getting that system way cheap it may not be worth it.

Buy a muffler (summit racing has some killer deals), and if you can't weld yourself, take it to a muffler guy and have him bend you a pipe from the cat back.

I did the exhaust on my 99 from the manifold back for under $200 including the muffler from summit. But I did all the welding and bending of the exhaust tubing myself. It's nice having a kick ass set of tools.