I just discovered my SPD 9/10/1968 Road Runner is missing the original water pump. I've look/asked around and noticed a couple different styles. Also, I'm no expert on date codes so I don't know what to look for there.

Curious what you guys have seen on your original cars?

Below a few pics of what I'm seeing...

This pump below is seen on a Lynch Road built 1969 GTX, P/N #2943290 ->



This pump below is from a 1968 Chrysler Newport with a 383 no/AC, P/N #2943290 ->



Below, same Newport pump as above; eight fins ->



More numbers on the Newport pump on the fin side: 301 and 4 over OS