External Oil Filter

Ive purchased an external canister oil filter and upon installation, ive realized im not sure which is the feed and which one is the return? top or bottom of canister? i have a 54' 235 and im also assuming that the plug on my block where ive installed the oil pressure gauge is getting a t fitting to include the feed to the canister

 

The why mine is set up is the the supply comes in to the top and return out the bottom

 

Yes, supply=top....return= bottom, The sponsor sells replacement rubber hoses with fittings and swivels, the most common placement is U-Bolts to the intake manifold with a backing plate, then the replacement tubes will fit on the 235.