I have extra black gel front CMC hood with aluminum hinge mounting pieces bonded in it. Due to size and shape shipping is very costly. I'm not sure whether cutting a slot, inserting the aluminum mounting piece and pumping fiberglass bonding "glue: through a couple drilled holes would work.
The hood was made of an inner and outer (hood liner) that was bonded together. Assume yours has the inner piece and it is already bonded? Guess I could make a template from my spare of where the piece should be.
I'll find photos of my spare hood. Here's one on car.