Inspection on my jeep is looming. The catalytic converter on my 99 XJ is ratteling really bad like a can of marbles shaking and rest of exhaust system is pretty rusted out. I would like to replace the complete system and would like to know the best place to purchase components. I checked out a few online and these parts look pricey for my year/model. Any suggestions on my best route that won't break the bank? Much thanks for the input!