I was just wondering what you guys are using for 5th wheel hitches for the Mega cabs. I have a 18k Signature Series hitch for my 03 QC. I was just about to buy an 06 Mega but thought I better check to make sure the hitch would work. Good thing I did because it won't. Apparently the exhaust is sticking about 1" higher than the frame rails. This won't allow the under bed rail bracket to fit between the bed and the frame. Draw-tite is working on a new bracket but it still isn't out. So what is everyone else using?