Tell her to just wind the windows down and go faster. Though anythings possible time and money are the solution.

Actually, aircon was an 'accessory' but not an 'option'
Yes I know, I'm a pedantic S.O.B. but it wasn't listed in the options in the brochure, but is shown as an available kit in the parts book as an accessory.
They called it "Kit-Cooler, Room-Dash.

I tried to buy one in 1980 but was told that it was never listed as being available in Australia.

Here is a KB10 with factory air.

Air con was an option when they were new so I dont see why not.

no reason you can't,
I've seen AC in a VB10 with an A15,
Weekend1000 has the factory ac out of a 120y he's going to fit it to a KB10..
get some mates at the local AC place..

hey guys i have a datto1000 ute with an E15 turbo in it. the misses mite have to use it as a daily driver but she refuses unless i put aircon in it. has anybody put aircon in a 1000? i was thinking of looking down at u pull it for newish aircon parts, i heard u can mix and match some stuff. (compressor ect..) is that right?