Regarding your picture, that is the M-Tech from bumper. Prices vary pending on what site you go through yet I've been looking myself and they run -450-500 US dollars (
http://www.**********s.com/E92-E93-M...ont-Bumper.htm). But you can always just add the lips to the e92's front bumper to make it look close enough to the M-Tech bumper without replacing the entire front. Side skirts are a M3 yet not sure on the prices but I'd google it