I don’t see what would be difficult, I can mock up a frame for the hood and cowl on the car using a wood frame and some thin plywood, put a plastic sheet over that, then some mold release compound, resin, a couple fiberglass layers, let it cure and pop it off the car, there is my mold. Then repeat on the inside of the mold using better fiberglass cloth. Then I have the entire shape from the back of the nose all the way to the dash, then I cut it apart where the cowl ends, bond in a lip for the hood to rest on, and bond on some brackets to the cowl, and hinges to the hood. That’s how it goes in my head, and how others have built parts for their Lotus 7 replicas.
Can it be that simple?