Outer Limits 4x4 Board

I have a 2002 2.8ltr TD dual cab 4x4. I am hunting around for a Caravan for the family holidays and can't find what my vehilce will tow and what all these numbers and abrevations mean? Any ideas? I have a hayman recce h/d tow bar.

I have towed bike trailers and stuff for years, but new to this whole caravan gig....

from memory the combination on these is 4540 or something
that is 1800 more than the loaded car itself
tare of mine is 1700

having said that i regualarly tow a 1t tralier with a commodore on it (which weighs just under a ton as its a bit stripped out) and never have any problems
just make sure the van has good brakes