heeps are you wheeling the DODGE?
that'd be sweet.
as for trail stuff. completely agree with Joel. i bring at least 4L of drinking water, just in case. and it can be used if bad things happen or for other fluid collection.
for tools, i bring basic hand tools, a good ratchet set, and everything to rebuild a D30 on the trail.
I also carry jumpers, garabe bags, a basic bottlejack and i think i have a spare brake line too.
best addition to my 'mandatory' stuff is an old, heavy moving blanket. its really thick and insulated. that way if you have to crawl under a vehicle you can lay on the blanket. this is really nice, specifically in the winter when its cold and snowy.