Alright, I'll add something to this. I just got dual exhaust put on my truck Monday. I've got a '99 F250 XLT Super Cab 4x4 with one of those WONDERFUL V10s. I love my truck in case ya'll can't tell. But anyway, I put two Glass Pack Cherry Bombs on it...it's and not enough. I mean don't get me wrong...it's got a nice start up and idle and it's doesn't sound that bad when you really get on it...but it's not nearly as loud as anything from TeamMudd's sound clips. Totally not what I expected. Went back to the shop and the guy said that there isn't any way to get it louder. Now I'm thinking...if I put a high flow cat and spring for some Banks headers...that will give me what I want. Any thoughts as to what more I can do...or alternate options. Also, what sort of a difference would a K&N Intake make...like the whole system and not just the air filter?