On my '74 Duster the parking brake cable and grommet are in about the same position as your tape and wire pass through is. The welded up hole isn't there at all on my '74.
The parking brake cable, hole, and grommet are directly below the flange for the parking brake mount. If you remove the tape on your car you should probably see that the parking brake cable hole is located on the corner of that stamped recess for the lower steering column mount. The pedal in the picture is the clutch pedal, the oval plug next to the steering column mount would have been for the clutch linkage (this was in the middle of a hydraulic clutch conversion)
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