I put from the cat back a straight pipe, cherrybomb, and a 3"x16" long tip. It sounds like an angry hornet but I love it.

Only cost me $80 here in town. Find a good shop and tell them what you want. Most small shops will cut off and weld on anything you want for cheap. DO NOT remove the Cat!!! Bad things will happen. My buddy thought he'd be cool and do it to his 01 Jeep XJ. Did not work out so well. I PM'd you about the bumpers and roofrack.