05 CTS V
Ok. Here is what I did: removed resonator and factory mufflers. Installed custom at the shop H pipe and two Aero Turbine 2540i muffs. Needless to say it is loud and it sounds bad a$$ for 353.00 installed and that is price of muffs and muff shop installing. I chose to stick the tips out .50". I love it and that is my taste.