Mystery solved-I saw the engine today and it has the ports on the block and cover. Reason I was concerned I got the block decked with the cover on it (so they were matched)and then I could not remember if the engine came from a oil cooler car. I think they all have the connections for oil cooler.

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Tony H
W111 280SE 3.5 Coupe
Manual transmission

Past cars:
Porsche 914 2.0
'64 Jaguar XKE Roadster
'57 Oval Window VW
'71 Toyota Hilux Pickup Truck-Dad bought new
'73 Toyota Celica GT