Yeah, keep you eyes peeled on eBay -- that's where I got mine. One good tip: try different keywords in your search, such as "BMW Roadster bumper", because when I found mine, it didn't have the phrase "Z4M" or "Z4" in the title. Due to the lower auction visibility, that's how I scored a great deal!
are you still searching for Bumper Cover? my friend own a shop here is the website "partstrain.com" try to visit the site I bought my fan clutch there.