After making my first undertail with a 954 taillight. I decided to make another one out of carbon fiber and I'm using a 03/04 gsxr 1000 tail light.
I haven't even mounted this on the bike, but I've decided that it'd be too much on my bike.
Here is what the original one looks like
Here are pics of the undertail unmounted on the bike...
Asking $200 shipped.