OK - Good comments last time. Another question.

I have a 2002 Toyota Tundra TV (I'm learnin the lingo). It has a Reese type hitch that is made to fit the Tundra perfectly. Bolted right in place, rather than the generic sort of hitch. Any Tundra owners out there? What sort of "ball" part do I need? 2" ball? One that is basically straight out or one with a big offset (up or down). I happen to have one that has just a slight offset down I think? Will that work? I'm talking about towing the smallest TM 2619.
What do you say experts?