So I'm guessing the OP has come up with a solution by now, but if not, this should do the trick:
V-10, 3.73, E-350 Chateau Package-7 passenger w/4 captains chairs factory receiver hitch, brake controller...
2003 E-350 V-10 Chateau Van15,000LB GCWR, swap in 4.10 gears and you're at 18,500! One owner Carfax, low miles, kinda pricey, but it's been up for sale a long time.
So, would somebody go buy this thing so I'll quit drooling over it? TIA.
Edit: gone from the dealer site today (6/23) what a relief! Hope one of "us" went and got it!:B