I have two Holley 715's in my garage. The first has the famed four digit date (1081) which I understand is a Branda reproduction from the 1980's. The second I'm less sure of it as it has a three digit date (993) and the following stampings: S2MS-9510-A LIST-3259-1 993 Can anyone tell me when this carb was made and what likely it came from? Any help would be appreciated. Wayne wandccampbell@hotmail.com