we are looking for a replacement for our work van. we do a lot of remodels and additons and such.Currently we have a 88' E350 extended cab cargo van with the nonturbo 7.3 liter diesel. it is old and worn out, so we are looking to replace it with something relitively new. we like the van because it can carry 20' material on the roof, 14' 2bys inside, plywood, and more tools than you could ever fit in a pickup. in our current van we have carried cement, firewood, hay, used it as a camper, you name it. we have put entire bunks of 2x4 fourteen footers and 3/4 plywood on the roof. at one point, we carried two 24 foot curved gluelam beams. it also must have a bit of towing power because we regularly pull an 11000 pound trailer. 4 wheel drive would be nice but not a requirement. is our best bet a newer E350 with the diesel, or is there something better out there? a truck with some kind of extended cargo box or some other manufaturer like freightliner or something that I am not thinking of?