Looks like a 65, but Brazil may have used the old stamping dies. https://miami.craigslist.org/mdc/cto/d/fort-lauderdale-brazilian-ford-galaxie/7310162751.html
Wow. I thought it was a mistake when he said it had a 292. Sure enough. Looks like they used the Y-Block in Brazil up to 1976!
Definitely a '66 body, but Ford would send their old stamping dies down to South America where they would be used for a few more years..... Also, it's made from a sedan body and converted into the ambulance. Has the sedan tail lights and still has the sedan trunk opening.
I want to say that they used it up until something like 1982 or so, calling the Galaxie Landau - but I'm not totally sure.