I recently purchased a CGS catback exhaust for my 2006 Ford F150 with the 5.4. I was looking for better fuel mileage and a more aggressive sound. As I'm getting older, I'm looking for a quieter, but still good sounding muffler. This system hit the nail on the head, it sounds great. I can still talk to my kids in the back seat without any annoying drone. The fit snd finish is beautiful... I did have a lil issue with my order, but CGS cleared it right away. I highly recommend CGS exhaust!