Looking at my Oct 65 San Jose K Fastback, the choke cable hole is about 3 inches to the right (towards the passenger side) and down about 1/2 inch from the rectangular connector for the engine feed. It should be a 3/4 inch hole for the grommet. The grommet is the problem as it seems that nobody makes a suitable reproduction. NPD refers you to the same grommet as the brake lines use. It slips inside the drivers compartment (where mine is again). The correct one is 7/16 inch thick with an extended section going in the hole from the engine compartment.
Jim