I guess you can convert just about anything to tail dragger if you like. I would put the main gear in front of the wing and bolted into a reinforced block or ply backing, and put something at the tail so you can securely capture the mounting screws for the tail wheel assembly. Sullivan makes a pretty good tail wheel assembly, that is strong and light-weight.

http://www.sullivanproducts.com/Land...rMainFrame.htm