An option is an option. 1959 is when A/C was available. The firewalls were made by the factory for the option. So then they must have been installed by the factory too. I'm sure that option is shown with directions for install in the 1959 factory assembly manual.
The only thing I know of that was an option of sorts but not installed at the factory till 57 was 4x4. The pratice has been even in those days, and now, that you could order the options you wanted. They were added during the build process, even the option of not having anything more than just a primer coat for paint, or electric vs vaccum windshield wipers, oil filter on 6 cylinder 235's, 4speed or automatic transmission, delux or recirculating heaters, power brakes and steering, why would A/C be any different?
And reguardless of who did the install the A/C option was factory in that it was not an after market item that a dealer goes out to purchase. It was designed to work in the truck and fit.
Last edited by Truckrolet; 07/28/2013 12:04 AM.
