I posted a few pictures a while back of my southwest visible with the funky looking top and some of yall said that it was an ok7d but jacks book shows it as an unknown pump. I believe that a few of you said that it was a conglomeration of different pumps . Well i thought that might be the case untill this weekend when i came across another one that has the exact same top. So lets try to figure this out together exactly what it is. I will have some pictures on here as soon as i figure out how to do it thanks Wayne