Get a build sheet from DaimlerChrysler. It's the only way to be certain.
There were two tow packages, The "towing package" included the tranny cooler, HD alternator, HD radiator, wiring and hitch. However, there was also a "tow prep" package that gave you the tranny cooler, radiator, alternator and wiring but no hitch. Dunno why anyone would order a vehicle that way, but it was offered as an option.