Shawn,
You may want to drop a note to Gene Yarbrough. I believe he had a project going a few years back to recreate the Lazair design with the intent to sell kits. I'm not sure how far he got, but may have some research and drawings he's willing to share.
He was billing his project under the name of Piedmont Ultralights
Fltofancy@aol.com
Good luck...it would be awsome to have a Lazair sim on MS2004!
- John