D333 without the turbocharger was used in 12E grader, D6C tractor etc. Head casting or crankshaft is probably worth as much as the whole thing if you find someone that needs one.
We have one here that was an ex military power unit. Rated 200 hp @ 2100 rpm I believe. They're quite a horse!
The D333 (4.5" bore) became the D333C (4.75" bore) in the late 1960's and after a couple years became the 3306.