I've posted a couple replies to some Body Panel replacement parts threads but now I'm unable to find those threads. Plus, this post could get lost if I place it in an older thread.
I purchased a new replacement windscreen (No not OEM) for my 2002 ZX9R from Mad Hornets in the fall. The quality is great, the shipping is awesome (free), and their turn around is great. Now, I don't have any experience with their body panels, but you could give them a call and talk to them about it?
Here's a link to their panels for Kawasaki.