AC box change from regular heater box 67 barracuda

I can't say how a non-AC firewall compares to an AC firewall in a 67-up but do know on my 65 Dart, the firewalls were different enough that I decided to remove most of the non-AC firewall and swap in an early A AC firewall.

I'd like to see the pictures of the Chrysler dash or instrument cluster swap when you get to that point.