The plastic wheel trims that you are after are much rarer than the ones in the link in post #2 so it make take a while to track them down. They were also fitted to 850 so you might want to start a thread in that section of the forum as well.
I'm sure this is the same type but the part number quoted is different to yours...
https://www.ebay.com/itm/one-1994-to...-/371945308090