I need help identifying carb

[Toones]

I am trying to identify a Quadrajet I recently picked up.  The round ID tag is missing.  From Mr. Ruggles's book, I have been able to determine that the carb is a Chevrolet, GMC, Cadillac, or Buick (67-only) (because of passenger side fuel inlet) and either a 67 or 68 (based on the float fulcrum location).  I am guessing that because the base plate is not drilled for a rear vacuum port, it was likely in a car with manual brakes.

Is there anything else that can be determined from the carburetor?  Exact year? Manual/auto transmission?

[Toones]

More pics

[Kenth]

You have got a "Frankencarb" hacked up by one of the major remanufacturers.
The date on the throttle plate is 7:th day of 1969 and has a cast O which is Oldsmobile.
Float bowl looks like a 1967 Chevy-style but has to be checked further to know.
Airhorn has the 1969 and later choke blade shaft and may belong to the throttle plate?

[Toones]

Thank you!  The 0079 through me off because it wasn't matching the float bowl so it made me question it as a build date.  I didn't know about the cast in "O" that will help in the future.

I appreciate you responding!