can I install ac vents into a non-ac dash.

[Philayres]

Hello
I have a 67 RS with the Vintage Air installed in a non ac car.  Works well but the little vents bolted under the dash bum me out.  Has anyone been able to install the stock ac vents into the steel dash?  Is there a document or template that would tell me what size hole I could cut in the steel then install the "ball type" vents?  the one in the center of the dash from vintage looks fine, I'd just like to change the left and right ones in the dash......

Thanks for your time!

[dale68z]

  https://www.vintageair.com/instructions_pdf/561167.pdf

[Philayres]

thank you Dale68z!