AC to Non AC heater

We have a 73 Dart sport, with AC. We wanted to go with a non AC setup from a 72 Duster. The firewall had to be changed to accomodate the Non ACD box. We are also installing the 72 dash, since the cable operated controls are "smaller" than the AC controls in the 73 Dash.

Here's a few in process picts. need to final weld and put a few smaller patches on the AC holes....