OK, first off we do not roll around town with 1035 gallons of water. I know that the truck will be overweight. We have had this set up for over a year now and have had no issues. Here in South Florida we deal with mainly gated communities that could have hundreds of homes and miles of sidewalks. This is the reason for such a large water tank. I am not asking for opinions, I am asking if someone knows where I can find a 1035 gallon tank. I know what works for me. The motor on the Isuzu FRR is a 6 cylinder diesel and has a GVW of 21,000 lbs.