Wondering if anyone on here uses a fuel transfer tank on the back of their truck at all. We're looking at getting one to put on the back of our 3500 possibly. I like the idea of not having to mess with 5 gallon cans of diesel anymore, or having too drive the machinery up to a gas station to fill 'er up. I'm thinking maybe a 60ish gallon size would work best. Also looking at the combo's, the tank and tool box in one. Anyone have experience with those?