The twin cyl Wisconsin pump works great. I replaced my original pump earlier this year with the twin cyl pump. The fuel pump lever is not the same, see the pictures below. Not to worry as inverting the pump does allow it to work just fine. You will also need to remove the four screws that hold it together and rotate the inlet/outlet portion of the housing 90° so that the fuel lines line up properly. For some reason I don't have a pic of the new pump installed.