It was relatively easy to install the evaporator. I did have to drill a couple holes in the firewall for both mounting bolts and the A/C lines and put 2 nut-certs in the cowl.
I used a piece of plastic to with a bit of texture on it to adapt their control panel to my dash hole to replace the factory heater control panel. I got that from Tap Plastics.
One of the biggest enhancements you can make on your car to improve the effect of the A/C system is to fully insulate the passenger compartment with a self-adhesive Dynamat Extreme type sound deadener AND a foil covered insulated mat with all the seams taped up to keep out heat, noise and fumes. My insulation goes from under the front windshield to the rear windshield and door sill to door sill plus both doors and under the headliner in my hard top E-Body.
I've written on that installation technique, which I learned from an airplane interior insulating web page. The butyl self-sticking mats are not enough by themselves. The addition of the blanket type foil pad really makes a big difference. I've done it in both my Mopars.
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