For Modified Long EZ fuselages, Here is an exerpt from my potential web page on the Limo EZ. I based my changes on Sam Kriedel's work when he built the Limo EZ. The article appeared in the CSA news letter. Ibelieve streching a Long EZ is a lot different than stretching a Cozy.
From the article: "The firewall was widened 2 1/4"...The aft compartment being stretched 4 1/2". The pilot station was moved forward this amount. The canard also went forward this "limo" amount plus an additional 2" making it 6 1/2" farther forward than a stock Long EZ. The calculated CG shift forward was about 2". The m.a.c.of lift also had to move forward so I (Sam) achieved this by two means. The canard shift forward handled half the requirement while a 7" canard span increase took care of the remainder." The standard canard is 140". The Cozy MkIV canard is 147". I built the canard using the methods used to build the Cozy canard. The center is different and the lift tabs were placed for the widened fuselage. Back to the article: "The nose gear also went forward with the canard plus and additional 1" ... In addition to moving the longerons apart 3/4" at the pilot panel, the fuselage sides were constructed out of 2" urethane foam to permit 'hollowing' thereby limiting cross section drag. It was necessary to jig each side and bottom into curved shape before skinning the inside to prevent 'suckin' during fuselage assembly"
Joe Berki