If you go on the TTI site there are footnotes that have pics showing what swaybars their stuff works with. Here is the direct link

http://www.ttiexhaust.com/Footnotes/FN_18.htm

http://www.ttiexhaust.com/MoparClassics-Exhaust/Exhaust_Syst_HW.htm

note says it won't work with the Firm Feel