[sixty8HDC30]

I pulled one of the valve covers off my 68's powerplant to get the casting numbers off the head (3911032 1968 70cc 327) and despite the outside of the engine looking old and grimy, the inside is just about spotless. So I guess it was rebuilt at some point. Pretty stoked to find it so clean inside.
Based on what I know about the trucks history, I would guess it has somewhere around 10k miles on this engine rebuild which would have been done in the early 90's.