Those wheels look great Dervis. A little bit like mine but I suspect you've gone with the body colour rather than gunmetal grey like mine. Looks great with those centre caps too.
I think you did the right thing with those brake pistons. I didn't change mine and wish I had as they had very slight digs in them from fully retracting them and getting them stuck. I don't suppose you've kept the old good ones as I don't think they come as anything but the kit? I may need to look into getting some and do the job again