http://ciad.ssau.ru/school/pages/bakashov_s/pict/mcLaren%20f1%201.jpg
don't look like it to me?!
Joe, the mirrors in this pic are identical to the mirrors fitted to our Marcos Mantis race car, we're not exactly sure of their origin, but they are the very same as Aston Martin DB7 items from a few years back, and are probably Ford or Mazda parts bin specials!
The mirrors on a car like MCF1 would have been subject to safety legislation, depending on what country they were exported to, and on which side of the road they drive, even though the F1 has a centrally mounted seat. To make things even more confuseing, they probably would have sourced LHD and RHD mirrors to compensate for the unusual driveing position, otherwise the the mirror glass would look odd in its caseing, with unusually wide gaps.. sorry to bore!
The reason that many low volume manufactuers use already existing parts, eg, lights, locks, seat belts, etc.. is that these parts have already been "Type approved" quite simply they throw countless pre-production cars at a concrete block, to test, and approve the parts, once approval has been gained on these parts, they can be fitted to anything, and not have to go through type approval again, saving the little guys millions in development costs...
Tom