AC Controller Help

[jugernot]

My truck originally had no ac. I'm putting in a vintage air unit and using the factory controls.

I do not have the proper holes in my dash to mount the unit. My question is;

Where on this area ( marked by the blue line in picture below) do the holes need to be placed.

I do not want the controller to be to far in the dash or to far forward. Pictures of the holes with AC controler would help.

Thanks