Do they not require full belly pans in CA? Here they allow the novice group to ride without, but intermediate and advanced require some soft of catch pan.You can get a set of FZ6R fairings on ebay relatively cheap. They're not OEM quality but they're also half the price, perfect for a track day. Just search for them on ebay. then look for a cheap, wrecked headlight housing you can paint to match the fairings.
I've been thinking about doing exactly this if I start doing more track days.