I have 2 SRT4 Catbacks. One is a complete factory setup, 2.25" all the way with 2 resonators in the mid section.
One is a custom made 2.5" straight pipe, (mandrel Bent) no resonators, mid section into a factory 2.25" rear section (Y-Pipe split)
I Paid $100 for each setup. Not sure what you are looking to pay...