I ran in to that question a while ago, I got a (not mounted yet) FF sway bar, same type as stock, and TTI 2,5" X-pipe system, it does list the system as incompatible, but after asking around, both FF, here, and a good Mopar shop, everyone says it works fine. It will be interesting to get the stuff on the car soon. Ceramic coated headers (shortys) on a 340.