Old diesel wagons

I’ve been thinking about this for a long time, but I don’t know how realistic it is. I live in the USA and the import of vehicles that don’t correspond to US specs is almost impossible or financially uninteresting. Except if the cars are over 25 years old. And if I look at what people in the USA are willing to pay for G-models, landrovers or other older GWs (especially rare diesel models), then I’ve already thought about whether the worthwhile solc well after 25 years of being on the road and German winter, they probably all look kind of ugly and some things have to be done. Are there certain models that can still be bought at that age? How are resale values for large-volume diesel models in relation to the pollutant classes in Germany or in relation to the H-marks after 30 years? In short, you can get cheaply old diesel GW in Germany or are they all already in Africa or in the Orient? 😉 Greater thought of vehicles sold in the USA as gasoline engines like Mercedes G, various Toyota and Nissan models, T3 Synchro, ….