Fenders for the vert are unique to the vert and are as scarce as hens teeth. The rocker panel is higher on a vert than on regular E30s, so that part of the fender is "longer" (stretches further to ground)
You can find used ones from time to time on ebay and on various website including r3v. They go for about $100 each used if I recall, new are over $200 each and are not available as aftermarket parts. (regular aftermarket fenders are about $50, but not vert).
There is a writeup on e30.de about how to modify a regular fender to fit the vert, which involves lengthening the rocker portion through welding.
You can also cut the rust out and fibreglass it. It will be covered by the skirts anyway. Given you're not driving in winter shouldn't be a problem with getting worse.
Wish i was able to make it to Tobermory show... my car is still in pieces! Enjoying the 740 sport though... :-)
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