Has anyone done a dual "cat back" exhaust on their Crew Cab's. It looks relatively simple if you want both exhaust pipes to come out on the driver's side. The fuel tank on the passenger side kind of makes it difficult to route an exhaust pipe down that side. Has anybody done that?

Haven't seen it done, but any reputable muffler ship should be able to bend you something up for about the same cost as many aftermarket kits.

I just got a 2.5" Mandrel bent exhaust done on my truck last weekend. Its not a dual setup just a new y-pipe straight into a Flowmaster Ultra 40 that dumps right after the cab. Got it done at a local Import shop for $325.

There used to be place that did it. D&S I think it was. It was a full mandrel bent true dual for the Crewcabs. It's CTP now http://www.customtubeproducts.com/exhaust.htm $650 plus shipping from Florida.