You go to the dealer and buy them. The brands are going away, the drivetrains are not...

-Jason

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.

As I asked, what about the parts that are NOT drivetrain related? What happens when my gauge cluster fails and it needs a replacement and it is OUTSIDE warranty? Can I be sure that they will have that part or will I have to scrounge for it? Ford brought the XR4T1 across the pond from 85-89 and the Scorpio from 88-89. Support for it evaporated even back in 95. Oh, you want a trim piece because that one is broken? Nope. Obsoleted. Parts guy would joke with me and say "Obsolete. Now what are you looking for?". It takes more than drivetrain to keep a car going.

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01 Ford Excursion Powerstroke
99 E300 Turbodiesel
91 Vette with 383 motor
05 Polaris Sportsman 800 EFI
06 Polaris Sportsman 500 EFI
03 SeaDoo GTX SC Red
03 SeaDoo GTX SC Yellow
04 Tailgator 21 ft Toy Hauler
11 Harley Davidson 883 SuperLow