I purchased it from Scott Hyde, [email protected] He has a web site but I can't find it anymore.
Here's some more info.
Scott Hyde, HPI, PO Box 844, Deer Park, WA 99006, (509) 276-9227, (509) 979-5612 cell
You can buy standard length ribs in different heights or you can call Scott and have him make you one at the length you request. I have had two made by him and both were special ordered and were made with the mid bead installed at the location I requested.
I'm very satified with both.