[rotorwrench]

The tank can be cleaned & sealed as long as it isn't too rusty inside. Bill Hirsh sells a kit for this. Some folks say the sealant breaks down with the modern ethanol fuels but I haven't experienced any problems yet. Tanks Inc makes reproductions and several others but I don't know if they reproduce a truck type tank or not. Fuel quantity system might be affected by this if you have an electrical type system in the 36. The new type tanks generally have a different sender mounting boss than OEM.

Trucks generally have a relatively simple exhaust system with a cross over from the left to right and a tail pipe to right rear. I don't know if anyone reproduces these for trucks but a good muffler shop could likely make one that will work if not.

Radiator shops that actually recore a radiator are few and far between now days. There are still a few left but mostly in larger urban areas. The Brass Works and Walker are expensive but this is all likely done by hand and labor is not cheap. Your old tanks & supports would have to be in good condition to do a recore. The modern one may be made to hold higher pressure than the old 36 was ever made to take.