GoogysGotaCuda, my 'Cuda was not an original air car so I purchased the "non-air" kit. When I sent my dash pad to Just Dashes, I had them put the cut-outs for the a/c vents.
The difference between the two is the vents (obviously) as the non air set up has a small rectangular panel that bolts to the bottom of the dash that houses three vents. As for the control panel, they should be the same.
When I changed to the air dash, I had to find a set of original vents (which are not reproduced) then order a set of adapters from Vintage Air that fits their hoses to the OEM vents.
Hope this helps,
Cheers!
Mickm