I have secondary CAT delete and an Ansa muffler. Ansa is an OEM manufacturer for Ferarri. This muffler sounds great an no drone. Some SRT guy's dismiss this muffer because of the inlet pipe size, but what they may not know is the inlet pipe is stepped to fit differnt size pipes. You have to cut the inlet tube close to the muffler to git the Crossfire pipe size. Here is a sound clip, this clip was after I put in a V8. Still sounded very good with the V6. The Ansa is rated up to 500HP.

Soound from the rear about a minute into it.

Lantana's V8 NA Crossfire2.mpg - YouTube