You're going with the WRC look arent you? Didnt the WRC cars have these doors?
Thought the Grp A/WRC cars ran small square shaped stubby mirrors?
Kelv, if your going for weight saving options then why have a heavy electric motor just for electric wing mirrors mate?
For looks only, I wouldn't bother, just get on and finish it and keep it light as possible, i'd personally have keep fit windows and sliders in perspex too mate