Tom, it would be helpful if you could determine the 1968 Ford part number of your desired carburetor. There would be three possibilities: 289-2V with automatic C8ZF-G sometimes stamped 8Z G, 289-2V with manual transmission C8AF-AK, 390-2V only with automatic C8WF-A. These are all shorthand numbers the basic carburetor number is 9510.