Only thing I can add is I hope you weren't looking for economy in this deal.
you'll need a 3.42, 3.55 3.73 and an 1800-2000rpm converter to help that little 6er get it done.
Nothing wrong with a V6 fullsize PU; we had a mid 90s chevy 1500 with a V6, 700r4 and 4wd with 'helper springs' in the back. Plowed huge piles of snow, towed horse trailers, loaded tons of hay and grain in the back.
It did better on gas than our old 70s era power wagon (360, 727 and I think 4.56s) but not by much really. The deeper 1st gear of the 700 would make life easier, not to mention the OD (don't tow heavy in OD though); but, use what you've got...just be realistic