I have a 36 with a later glass bowl pump with a napa #3039 filter. You need to open up the hole slightly as it wont fit over the nub in the center of the pump.You also need a spring under it and a proper cork gasket in there. I also have a chrome metal glass tube filter in the line inbetween the pump and carb. They stop ALL crap coming through the line, OMO. ken ct.