Everything except the modified ends are scratch-built. The walkway material is from Plano sheet slotted material, and the ladders are from a Plano kit. Trucks are Kato 70 ton trucks with the rotating roller bearing caps. Internal spring safety valves are Alumilite castings, which I intend to sell someday. The manway is also a homemade casting, and the ball valve outlet is plastic rod that was turned to shape.
Next step is the primer and final coat of paint.
Below is a prototype photo taken by Ed Barry in 1997.