I asked the same thing a few weeks ago. Apparently there is a market for this bird.
After I finish my current project, I'm going to look into molding one from plans.
However, somebody (in the last thread) mentioned that Century, or Yellow or somebody was working on one--a big one like we want.
I haven't checked out the Leibtrau one, other than the pic on thier web site. I haven't heard about this "kit" anywhere else, so between that and it being over seas, I'm a little leary.