Barracuda A/C vents install- pics needed

Wow! Looks familiar! Actually, I'm trying to make sure I get the centering correct. The dash has no holes at the time for the bracket that mounts on before bolting on the vents. Can you provide a measurement of how far that bracket is from the left side? Say from the screwhole of the steering column cover, to the edge of the black bolt-on bracket? The bracket has a cutout on it that looks like it should line up with a stamped hole under the ashtray... is that correct??