last question for anybody right now i have single stock cat then a single glasspack with y pipe to dual tips at 45s im contemplating removing cat or maybeputting in a magnaflow cat and ideas if it would be louder without a cat or what the magnaflow would be like

 

That is my exhaust setup and it got a good bit louder when I put the magnaflow cat on it. But I have the 5.2l and it sounds a little different than a 5.9l.
Here are a couple videos of it
http://www.youtube.com/watch?v=qyIOm...eature=channel
http://www.youtube.com/watch?v=NuTvp...eature=channel

 

every one always says a bit or a little lol is it noticible? and what would make my truck the loudest cuttin off cat or puttin on a magnaflow cat?

 

Cutting it off would make it louder for sure.
The tone difference is noticeable, but they are really close and they both sound good.

 

Got it done today love it sounds great i have another question.... Afe brute force cold air intake and body have one and is 150 bucks a good deal for one and do they actually help the miliage??