I think printing the part directly would have some trade offs. you would likely have to use some carbon fiber filaments and even then the final piece may not be that strong structurally without significant reinforcement. but printing a shape as a mold or as a template for a mold would be feasible.
Streeto Bandito made the entire body of their 240Z by printing it in pieces, and then combining them to make the custom shapes. They then made a mold off those shapes and used the mold to make the carbon fiber parts. I'm copying that process for the splitter tunnels right now.....
https://youtu.be/iLhU8J8F7aM?si=85T_PTa0M8_qC5x0