AJ- forgot to mention. I learned a tip from my body guy/painter that can save a lot of time in fabrication. Because I wanted my splitter to be removable from the body (even though the 2 pieces must be together for the from clam to work correctly with the hinges), you can see in the pic where the splitter overlaps the inside fender wells...
To get this shape added to the splitter, or for creating other shapes, go to Hobby Lobby and ask if you can buy their scrap clear plastic material they use for framing pictures (if they are not using glass). Cut this plastic material to size and panel bond together. I roughen the surface before panel bonding. Then fiberglass over it. This saves a lot of time. I have made close out panels, panels that enclose the rear metal frame at the base of the rear bonnet, and the tunnels on the front bonnet from this. I was concerned about paint sticking to this material if it was not covered with fiberglass. My painter said, "I can get paint to stick to a weiner".

To get this shape added to the splitter, or for creating other shapes, go to Hobby Lobby and ask if you can buy their scrap clear plastic material they use for framing pictures (if they are not using glass). Cut this plastic material to size and panel bond together. I roughen the surface before panel bonding. Then fiberglass over it. This saves a lot of time. I have made close out panels, panels that enclose the rear metal frame at the base of the rear bonnet, and the tunnels on the front bonnet from this. I was concerned about paint sticking to this material if it was not covered with fiberglass. My painter said, "I can get paint to stick to a weiner".