I have a Manchester propane tank that was used on a '99 F250LD (same body as '97-04 Heritage F150). The propane system is disconnected, and I want to sell the tank, along with anything else propane related on the truck. It's powder coated, and is in very nice condition. It's a dual manifold tank, like the 270159 tank at the bottom of this page: Manchester Tank: Motor Fuel Products . What's it worth?