x2.
Glad that this 1972 Polara seems to have fallen into good hands. Regardless of what folks joked about in that other thread linked to by
@71Polara383, they will support you and provide advice and help. That has been my experience.
As
@71Polara383 suggested, please post the fender tag. That is a 2x3 metal rectangle with all the option codes for the car; on a fuselage C-body (1969-1973), it will be located not on the fender (as it used to be on earlier cars, as well as on fuselage B-bodies -- hence the name) but on the radiator support, right in front of the battery tray.
I agree with most of what
@PurpleBeeper said, with the exception of the windshield washer. The fluid reservoir becomes brittle with age, and on many cars it is shot. Indeed, I don't see it in your engine pic. FWIW, I don't think it is worth spending 2-300 dollars (yes, you read that right) to buy a used one in good condition at this stage. I have been patient and have sourced a few at much better prices, but it takes time to find a good deal.
PS: the mirrors on your car are not correct, but they fit in with the backed out bumpers. Again, not urgent to fix at this point.