My 2006 WK 3.7 needs a new muffler ASAP. I have been looking and I guess my best bet is to take it to a muffler shop and have them install a new muffler and exhaust. I found a couple cat-back set ups ($400 not installed) but I've never installed exhaust and my welding skills are piss poor. I would appreciate your input and cost estimates depending on what option I take.