[Fast67VelleN2O]

All 1970-1974 Muncie transmissions (M20, M21, M22) came with the magnetic P or Lisle plugs since starting in 1970, all transmissions had the lower drain plug. I've seen both styles in these transmissions. It just depends on what they had on hand at that time. The W filler plug was not magnetic and came on the M20 and M21 transmissions that did not have a lower drain plug in 1963-1969 Muncie transmissions. I have also seen fill plugs with nothing on them at all for these transmissions (non magnetic). I have seen one or two different styles of Lisle Magnetic plugs for 1966-1969 Muncie transmissions. I do not have a picture handy at the moment.