Garch,
If you have not begun your Curtiss R3C-2 project yet, the are now at least 3 companies that will cut a kit for you.
For 1/4 scale try these two:
http://www.precisioncutkits.com/instock.html
http://www.kitcutters.com/Smi/SmiR3C2Racer.htm
This company is the only one I know of that is cutting 1/3rd scale.
http://www.kitcutter.com/cut/www.kitcutter.com/news.htm
Bob
Also, check out
http://www.schneider-cup.com for info about building and flying the 1/3rd scale Curtiss R3C-2 from the Schneider Cup Re-enactment held in Lake Havasu, AZ