remote oil filter fittings tapped right into the block UPDATE in post 58 and the whole idea got 86ed

diymirage said
you are probably right, but I can NOT think of anything else that could cause this leak, so by building the remote filter setup like this, at least I can eliminate the machined sealing surface

for the center I was thinking of using the plug you would use to install the stock filter plate, with one of these attached

Aluminum F5 flare 3/4”-16UNF (Flare nut) to 1/2” barbed hose fitting

That fitting will screw onto the 3/4-16 fitting you have now, but it won't seal on it, because it is designed to go onto an AN fitting. Also, I would never trust any barbed hoses for something as crucial as motor oil. If you must do this, do it up right with real AN hose and fittings.