Welcome to Ecomodder.
Agreed about keeping older cars active. For decades I drove cars that had been put together from junkyard parts (1957 Beetle on a 1966 pan and 1964 Notchback on a 1971 floorpan) or out of a farmer's field (1959 Rambler American and 1971 Superbeetle).
Where is the post on A-pillar fairings? According to
Gerrelt's Garage it's popular on Porsche 911s as a raingutter filler.