I had to make it. I just drilled a hole in the tank and welded a bung in. Will run 1/2" fuel hose up to another bung I will weld to the filler cap. That's all for filling only. Main tank vent will be 1/4 fitting in the stock pump top, then adapter to 3/8" hose so I can run an inline rollover valve that is made for 3/8 hose. The new tank has no rollover valve.