Re: Wards Sea King
I can't find a 27903A. A 27903B is a 1968. Look at the rest of the numbers. You should see two numbers followed by an "X", then more numbers. The two numbers before the X are the year reversed. 86X is a 1968, 96X is a 1969, and so on.
Your motor was made by Chrysler, later known as Force. They also made motors for others, mostly Sears. So, those will work, as well as the Chrysler and Force brands..
EDIT: Not to be confused with the Sears motors made by Eska.
