Welcome to the Team!
Is that a Canadian built car? (it will say so on the trim tag if it is). If so you can get all of the original documenting paper work from GM of Canada for about a hundred bucks (price varies but it only goes up with time). I mention this if it is still in Vancouver. If it was an American built car drug across the border then you have to hope all of the info you want is still in the glove box (Protect-O-Plate, bill of sale, window sticker and old tire and oil change receipts).
Looks like someone painted the car with red primer before finishing the body work. As with all primers. a primer is water porous so it needs to stay out of the weather (or in AZ) until you finish the body work. Nice thing about going to mid to southern AZ you can find rust free sheet metal there due to the lack of rainfall (or snow fall for that matter). Snowfall in southern AZ makes the news it is so rare.
A/C is going to come down to Vintage Air or a similar Knee Knocker as it is really difficult to convert over to factory air without a donor vehicle as a parts car. Even then it involves swapping the dash and cutting out the factory openings in the fire wall and welding in the same parts from a donor car to mount all of the ducting and mixing boxes the factory used. I have done it once before but never again, much easier just to look for a factory A/C car and restoring that one.