[Michael R.]

Is there a cross section view of the relief valve in the T-16 Manual ?

Attached is the cross section view found in UC-F1, which shows the input flow direction and return. The second image is a standard set-up with an electronic oil pressure sending unit attached in the normal fashion for the Ford Canada UC Mk. I* and Mk. II*.

Note that for correct installation in the Canadian Carrier, the high pressure would be on the left side when facing forward, which is as you (Andrew) have it positioned on your block. Your oil cooler plumbing appears to have a direct connection to the return side of the engine block from your cooler.