I traced them at "van Andel's", an old store, now closed, with lots of Italian parts. Called him today and he still had two wheel arches. Because I had a day off, I was able to pick them up immediately. They are clearly not the best quality, but they will be very useful. We now have all important sheet metal parts so as soon as there is room in the workshop planning we can get started. In the meantime we continue on the engine.