Good morning! I am Matias Adrogue. I bought a 1964 Cadillac coupe de ville last year and am real close to the final restoration details! I call her “Jaws 64”. Pics will be posted soon. I need advise regarding a AC/heater. It came stock in the vehicle but it does not work. A mechanic gave me a bid of $1700 to replace and repair. I am ready to install a new system - Vintage Air or Old Air Products from Fort Worth Texas. I would greatly appreciate your thoughts. I read the great write up on the Help page with Old Air Products. Any help would be greatly appreciated.