Chrysler: need 2003 grand caravon sport trailer tow package info

My dad just called and wanted to know what the trailer tow package
includes on a 2003 caravan sport, the dealer doesn't seem to know too
much about they just tell him they can add the tranny and oil cooler and
alternator, if this is not the full package he doesn't want it, I need
specifics of what it is or a link to what it is on a 2003.

This is also a Canadian van, Ontario Canada to be exact.

Heavy duty transmission?
oil, and tranny cooler?
bigger battery and alternator?
bigger rad?
trailer wiring harness?
Suspension?

Thanks


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