Jump forward from 1965 to say 1990!
Advert possibly says!
Found in an old boys lockup/grandads old car!
A 1965 P6 2000sc needing some TLC/restoration!
You buy it cheap and find the following!
It has a remarkably solid base unit!
Blown/seized 2000 engine?
Fit an upgrade and use a good 2200!
Knackered original seats?
Fit a nice ambla set found in a scrappie!
Brakes/diff knackered?
Use the later ones from the 2200!
Bodywork/bumpers mostly past its best?
Use the good set from the terminally rusty 2200,
with the good engine and nice interior from the scrappie!
I agree that if possible it should be returned to near original spec!
But finding those parts is hard,and at least it is on the road!
Its all part of the cars history,at least it is basically an early S1.