Since I'm ordering fabric repair items from aircraft spruce -- I figured I would also order a quick drain plug for my oil sump. From the aircraft spruce page I'm having a difficult time finding what I'm looking for. My J5 has an A-75-8 Continental and spruce's online catalog doesn't list it. If I'm reading the SAF-AIR http://saf-air.com/oilc.html page correctly I need plug S6250 which Spruce sells. Is there anything else I need and can anyone verify I'm looking at the right part?