Canister oil filter line question????? F-Head

So, on the left side of the block , there are 4 ports. the rear is where the oil pressure switch goes, the next one has a plug with a hole drilled into it for the throttle return spring.... on the others two, Do all 4 come from the same galley ?? Which port is correct for the oil filter feed line? is it the one directly below the fuel pump or the next one back ???

Once again, I appreciate all the help I get from this forum, thank you

 

Under the fuel pump.

 

Thanks Pete!