Thank you George. Cross referencing with the Mustang people their 1972 CJ engines apparently had a D2ZE-9424AA. The 2 after the "D" meaning 1972. Does that ring a bell with you?
The information about the Holleys in Europe is new to me. Have you got any references that I can show the inspectors when I take #2471 through the vehicle inspection? They are picky about these things. You guys don`t know how lucky you are.