Earlier, Roy Bourgeois wrote:

We have need of the front windscreen acrylic sheet (the piece above the
front instrument panel) for a Blanik L-13 - if anybody has one.

Aircraft Windshields, Inc in Los Alamitos might have plugs for L-13. If
not, they can make a plug from the old transparency, so long as its
relatively whole. There's also a good chance they can match the
curvature to an area on one of their existing plugs. I've heard that
they pull a couple or three different canopy transparencies from their
Twin Lark plug.

Thanks, and best regards

Bob K.
http://www.hpaircraft.com/hp-24