Was that what you were looking for on frame info?
It's tempting to go bigger and stronger, but be careful, as the big thing you add is weight, and it adds up quick, then the truck weighs so much you need even stronger stuff, and all the sudden you don't have enough engine.
Decide what you want/need the truck to do and build for that, and a tad more, but don't build a tank if that's not what you need.
You said it needs to do three things:
1, daily driver
2, get around the farm without any trouble but not climb a mountain
3, pull a light(4000 lbs) trailer on occasion.
From that information I think that you need a light truck:
1, Daily driver needs to be light to be fuel efficient
2, A 2 wheel drive with a locker will get around really good on a farm, not a mountain climber says real 4 wheel drive is not terribly important.
3, 4,000 lb is not much of a trailer.
I would go back to a shortened 1 ton frame or a 3/4 ton, Dana 60 rear, and 44 front if you must.
If you jump up to 60 and 14 bolt that's a big step in the heavy truck direction, and you will then be tempted to follow those with similarly heavy components.
Think about what you will do with the truck, and build accordingly.
Grigg
