You being a good bodyman, you have the proper design down now !
You are probably way ahead of me here:
1. Spray headliner adhesive on the cardboard.
2. Cut and fold down wax paper and smooth down to the adhesive.
3. Now you have a mold realease working model set up.
4. Cover with 2 layers of Fiberglass and Resin, like they do in boat building.
5. Strip out the inner cardboard after Fiber Glass sets up.
6. You can now put another layer of Fiberglass and Resin on the inside to build more strength add mounting brackets and corner support braces.
7. Now do your magic auto body skills to the exterior of the console, and then paint to the color of your choice.
Cool, Cool . . .
.
