Engine year

[CR72LB]

I have a 72 Chevy C10 with a replaced 350. The guy I bought the truck from is not mechanically inclined so he had a mechanic friend replace the blown engine with another 350. He believes it's a 72 or 73, but not sure AND doesn't know if it came out of a car or truck.

Is there a way to identify the year of the engine and what it was originally in?

I want to know the year so I can get the correct filters and I need to replace a badly leaking timing chain cover/oil pan gasket.

Thanks for any help!

Ted