I like a certain unremarkable car from the recent past. As they are repairable currently, can one just buy all of the parts new and put it together?
Are there any parts that aren’t sold new?
Have you done this?
Are there any tools to help one get all of the parts?
Any communities?
You can buy a kit car, but those are mostly targeted at people who want to build an affordable sports car.
https://gearjunkie.com/motors/best-kit-cars
Kit cars are cool, but always expensive.