A Caravan is a minivan and I'm not sure that they were built with a one ton load capacity.
We have a '90 Plymouth Grand Voyager, seats seven, with a 3.3 engine and an OD automatic showing 192,400 plus miles, still runs fine but the sway bar broke the other day, fortunately I have a '93 parts van with a good sway bar, may change it out this weekend.
Don't know if this answers your question or not.