Recommend an AC system for my 68 Barracuda

I did the vintage Air in a 65 GTO and it works okay.. it went in okay.. when I called to ask him how many BTUs they couldn't even answer they just said it it works good...
I have a thread in the heating and cooling part of the Forum installing the cold Master 22,000 BTU system in my Duster... A year ago it was only $480 to my door. After several calls to them and they answered the phone and I talked to the gentleman named Omar.. they offered good customer service and any questions I had the answer fully..