This comes up from time to time, but under present circumstances we ought to be thinking about spares for our beloved tanks ... maybe a sticky list of available compatible bits and pieces.
Lots of service parts are generally available, such as:
Brake discs and pads (lots of aftermarket options various qualities)
Bushes (Vauxhall and Opel commonality, plus Powerflex, love them of hate them)
What engine spares are common? Both petrol and diesel? Do any of the Isuzu bits fit the ill-fated 3.0tid or was it too Saab-ized? Lots of aftermarket belts both cam and drive available for them wot needs them. Quality?
Things like windscreens will probably available (Pilkington versions) as long as Autoglass feel there is a market
I suspect the long-term problem will be body parts like front or rear valances, and headlight assemblies ....