http://www.youtube.com/watch?v=j4azT3MWtHE

Look's to me much like an F-16 style gear retraction only reversed and without the rotation of the wheels. I would think that standard retracts with the proper gear struts and mounted correctly could be made to work.

The first three pics show how the gear retracts on my CBM F-16. Unless I'm missing something, it look's like a set of bent tube struts adapted to a setup like on the F-16 while maybe not totally scale would be darn close.

The last pic is a Lancair with what I believe are a set of Gene Barton retracts....very similar also.