Duane Egli tried to convert ex LTU TriStar D-AERP in the same way. It sat on the ramp at Ostend forever, stripped of an interior. LWA Engineers tried to install some sort of bulkhead using H-beams from a local DIY-store, painted zinc-chromate green to give it an aviation appearance. It left somewhere in 2002 to be scrapped in Opa Locka, not before an engine failure forced it to land in Manston... I guess these "converted" pax aircraft just don't make it as decent freighters...