I have this one on my short bed crew cab too. The shop that did the install had to modify some things to shoehorn it in. (Gibson & JC Whitney had conflicting information on their websites when I purchased.)Gibson has a exhaust for the crew cab long bed. I have it on my truck.
Took mine to a local muffler shop, $250 for a custom setup, stainless tip, flowmaster muffler, took them about 90 minutes or less.
LOL, doh,I had to go and look at my receipt, it's a Magnaflow muffler, with custom piping, my crossover pipe is now behind the T-case instead of right at the trans.Cool price! Thought you had gone Magnaflow?