i love the way the 40 series sounds on the v6. I ahve a few sound clips, but there when the motor was cold and the muffler wasn't warmed to its full throating sound. I'll post it anyways. (its alot louder in person, specally when its warmed up.) Yes this is on a 99 V6 so this should sound basically the same.

http://floorboardracing.net/Burnout01.wmv

Also, please note this video was taken in may. The muffler has "cracked" (almost like your voice) and it sounds much deeper. I'll try in the monring to get a nice vid with the motor at operating temps for ya.

 

Everone is right. I just put a 40series flowmaster on my v6 single flowmaster dual out the back, it makes it sound great. best money i put down yet!

 

i know its a bit off topic but its seems a lot of you have the 3.9L enigne. i was wondering if your trucks idle fine without any missing?

 

i have the 3.9 and it sounds good w/ stock piping and a vortex muffler. prety deep. im gonna be uploading a sound clip soon.