[64Lemans]

Hello.
I was working on fixing some lights and started pulling up the carpet, console, buckets, etc..
My car originally came with AC. I took the kick panels off. I noticed on the passenger side, the black air duct under the dash, goes into a cutout inlet on the side. Not sure how to describe it. I will get pics posted. On the driver side, nothing is running to that same open space. Almost looks like a speaker could fit in there.
Is this a normal layout? Also, from what I understand, the kick panels are different for a car with or without AC?
My AC doesn't work, but wanted to keep the car as original as possible. Open to suggestions, any pics someone can post, etc.. would be appreciated it. Thank you. The paint job on these 2 are horrible as well.
I believe I can only get black ones, if needed, and repaint myself.