Want to buy a bagged dually??

I am looking a for a bagged dually, prefereably with a diesel engine. With the shop work load, with my truck, customer 48 Dodge, s-10, and other misc work. I do not have time to build myself a tow pig. So I am basically looking a for whatever is out there. Two rules, must be a dually and must be crew cab (4 doors). Thanks for the help guys!!