I did CAD models for the hood and suspension fairings, then cut them from blue board (polystyrene) foam (from Lowe's). I had already split the models into sections to eliminate undercuts, and the CAM software slices those sections to match the thickness of the material you're using (1.5" in this case). I left these models a little on the rough side because I want to finish them by hand, to fine-tune the shapes. The CAD/CAM process gives me perfect mirror images to work off, from side A to side B, with lower blood pressure.
Next, I have to carve out enough foam to get the fairings in place, then use canned foam to glue them to the hood and track nose, plus fill the voids. The front clip will be a one-piece lift-off deal, with an opening hood panel to display the motor.