Early Gen1 SR3, 1300 oil psi sender location?

i have an early gen 1 car that I'm finally about to finish up a complete bare frame rebuild on. It came to me partially dissembled so I'm unsure of where the oil PSI sensor should be installed. There was a PSI sensor connected to the loom that dangling from wires but wasn't installed in anything. There also doens't seem to be an obvious bungs (that are currently plugged) where it would get installed. Anyone have photos of their engine that show sender locations?

thanks!