XLT- I noticed that you had a Gibson Cat-Back system on your list of mods..I tryed finding that system for my truck but could not find it for a longbed. Where were you able to find it?
Thanks

 

Believe me Gibson has them. Just go to your dealer, or who ever you want to buy from and they will order it for you. I'm pretty sure it doesn't matter anyway because it is a cat-back system. I think they are universal, you just cut at a different length from the muffler than you would with a short bed. In my opinion the best choice is the single swept side, although it is the quietest of their systems, it will give you the most performance out of the 4 they offer for the 4.2.

 

ditto what Falcon11 said. I actually ordered mine from http://www.truckperformance.com . The kit came with instructions for cutting the pipe for shortbeds and even had some 'extension' pipes for extended cabs. I called truck performance when I ordered just to make sure it was the right one, because it doesn't specify on the web site that it is for long beds.