Picked up a Carter Yf many moons ago. Tag says 3331sx...I have an old Carter(large) catalog but only covers 39-54...I found no listing in it. Found it on a website (short blurb)listing only 3331s (I'm sure sx is more than likely a later superceded #) for 51-54 kaiser and HJ 4&6cyl...as well as into AMC and Nash..... Anyone more familiar with the Kaiser usage of this one? Trying to determine if this is one of the later "universal" models. Just not really sure on this one.