I'm hoping somebody can help me with this. I'm looking to replace the fuel filter on my 1985 BJ73, 3B. I've scoured pictures of all kinds of 3B engines on BaT, here, everywhere and none of them seem to have the setup that is in mine. It came with a NAPA SF5089 filter. The previous owner put an oil drain plug in the bottom that has started leaking. I'm trying to find a proper fitting/plug to go on the bottom of the filter. Does anybody have an idea? Is there a different filter I should be using? Thanks for any help you all can offer.