There are plenty of places that make those type of panels. I am a carbon fiber parts manufacturer myself so Im going to recommend that you do one of two things.
GET THE SHARKSKINZ "STREET UPPER" and just take off the belly pan or have someone get you both panels and cut them off and paint match them.
There is a huge difference between alot of the companies making bodywork.
I dont even bother with it as alot of people are cheap and dont care how crappy the body panels they buy are. There isnt much point in competing with people when the prices are so low.
I say sharkskinz because I can make my own stuff but Id rather buy his. They make a quality part for a reasonable price.