You didn’t ask for this but a VW diesel to 1992 runs w/o computer chips. The glow plug control uses electronics for timing for cold or hot starts but this can easily be done manually if you want to wire the electronics out. That leaves the radio, alternator diodes and voltage regulator built into the alternator and LED lamps on the speedo cluster.
Older VW diesels are not difficult to keep going, just a little different than a gasoline engine vehicle.
VWs were made in Pennsylvania from 1978 to 1988 with Wikipedia having the exact dates. These could be called American cars with many parts from Canada, the US, Mexico and Brazil, all American countries and of course, Germany.