I have a cw slx and have replaced the convex drivers mirror glass with flat glass. But what is annoying me at the moment(and I guess that if this is all I can complain about, I'm doing pretty well) is that I dont think the mirrors are set back into their housings far enough. Or, that the overhang on top of the mirror comes out enough. Either way when it rains/showers etc they get wet too easily and hinder the rear view. And the rear spoiler also lets too much rain onto the back glass...I have to keep using the wiper. Good heavens, it might wear out more quickly..maybe we should see if we can get little wipers for the mirrors as an accessory???