I saw a short write up where they took the boss on the side of the engine that the oil pump bolts to and drilled two passages into the output side of the boss and installed a plug in the oil galley between the two drilled holes. The holes were taped and pipe fittings were installed for the hoses to the oil filter and back to the fitting on the boss nearest the block. The filter would have to have a by pass installed in it to bypass the filter when it was realy cold.