Update: Sold. Thanks!
I just recently finished my own HIC build. In a fun twist, a week later my wife and I decided to move abroad. So I'm selling my HIC for the cost of materials and no more -- ~$600.
My version uses a Stormrider HIC cast (sans feet), a door frame for the box structure, a combination of elmers glue and plaster of paris for the carbonite filler and texture, and 3 shades of metallic Rustoleum paint. It's pretty minimalist in that it doesn't have side panels, lights, etc, but it's solid and looks pretty nice. It would serve as a nice platform to continue building on if you wanted, or just leave it as is. I had always envisioned this being mounted into a wall and laying flush with the small frame lip protruding.
I'm in the Bay Area (California) and can really only offer local pick up as shipping this would be exceptionally difficult and pricey (it weighs about 140lbs). PM me if interested and we can figure something out.
Thanks for looking!