My truck is in the body shop currently, and I'm removing the propane tank in the bed. It was a modification installed by the original owner, who used propane and his own biodiesel in this '99 7.3L in order to boost mileage and HP. He left no instructions on how to control it, and I lack the knowledge to figure it out. So, when they replace my truck bed, I'm removing it and selling the tank. It's in a body shop in the Kerrville area, and when I get the vehicle back, the tank will be available. Probably 2 weeks from now. I'll have it recertified if necessary.

I believe it will hold about 40 pounds of propane, but that's from my rough calculations of the volume of the cylinders.

It's a low-profile, dual-manifold tank. As you can see from the pics, my truck box fits directly over it. Ask price
will be $500.