The Malibu referred to was designed by Bill Cunningham about 12 years ago. It evolved from the Great Escape. The first version was actually .60 sized. He made it a bit larger for the original YS 1.20SF. It is small by today's standards and could be flown with a YS .91 or a Hanno Special. I don't believe plans were ever published, but maybe someboday has a set from the kit the you could scratch build from.
I haven't seen Bill Cunningham's name associated with any R/C events for a few years. Last I heard he was racing giant scale planes.
Good Luck! The Malibu is a nice flying plane!
-Will B.