I might have something that can help. Send me a private message with your e-mail and I will contact you that way.
What I can say is that Alien aircraft sold out many years ago. I believe that SIG bought their kit line as they produced their airplanes for some time. I think they may still be listed on the SIG web site, but as no stock. There has been at least 2 owners of SIG since then. Currently the plant in Iowa is cleaned out and for sale, hopefully to open again in some form.. I heard rumors of Illinois.
I still have my Demoiselle, Love it.