I have a Vortex muffler right after the cat(single in dual out). Then dual 2.5 inch exhaust that follows about the same path as the stockers running side by side. Sounds like a mustang cobra at idle up to about 3000rpm then has that distinct 2.5 sound. Just ask CONTOUR98svt how it sounds. Sorry no sound clips, but if interested PM me and I can tell you where you can get it.