I need measurements on the dash for a '56 where the air conditioning outlets would be located on either side. Im punching holes thru a non a/c dash and im using stock '56 outlets. Thanks in advance

 

I didn't know they had air back then. I was curious about the interior and looked on the web. If this is what you have or are modifying, it's a gorgeous looking interior. I'd love to see how it turns out. Sorry I can't help with the details you're looking for. I'm sure someone here has a 50's that will be able to give you the measurements.

 

I had a friend back in Northern California that added a complete factory a/c set up to an outstanding '56 Starfire convertible. When he was done it was ice cold and you could not tell that that car did not come from the factory with air. He did a great job.
I don't know where you are but I can try to find contact info for him if you still need it.