1975 318 head number location

[pedal2themetal]

HI,
As the title says I'm trying to find the head ID number and need its location to see if I can do some work on them or just but something different.
Thanks take care be safe
tim

 

[Darter6]

With the valve cover removed the cast in number will be visible .

 

[DeltaV]

Mopar Casting Numbers - Mopar1.us - Mopar Part Numbers

 

[WileERobby]

What is it you're thinking of doing ? and to what results are you looking for ?