[loki_the_glt]

Speaking from experience of other obsolete cars - any trim panels you find that are in good, or at least salvageable, condition, such as door cards, dashboard tops, centre console etc. would have to be at the top of the list. They may require repair but epoxy resin, Milliput or Squadron Green Stuff and expired credit cards can be used to repair many damaged plastic components.

Any mechanical and engine management system bits that are exclusive to your car also should be hoarded. A friend struggled to obtain bits for a B230K engine's EGR system.

For RHD 200-series cars, a spare windscreen wiper motor is essential since they are rarer than rocking-horse droppings.

If you have space it's worth picking up duplicates as you may be able to exchange them for other bits you need further down the line. Old-time plastic modellers use to buy 4 examples of a kit: one to build "out of the box", one to build "properly", one for posterity/pension fund, and one to swap at some future point. Having a couple of spares also means you can re-condition one without having to put the car off the road.