Hello all, quick progress update!
I now have a mold for the decklid hinges!
Also, the original hinges have bushings welded into them which would be difficult to reproduce by by molding. I sent a sketch to a very helpful pal of mine, who is very generous with his time, and his 3D printer...
And he sent me this pic last night:
The plan is to print the bushings from CF reinforced filament and bond them into the hinge arms.