Thanks for sharing the original article.We used what we had available in those days,although I personally never built ant body's from card stock.Are/were the body panels solid?I can't imagine trying to do the extensive and complicated body work you did on a flexible hollow body shell.Are you still building?If so believe me THIS is the golden age of model building.Welcome to the forums! Sometimes I used card stock and sometimes it was balsa wood. The underlying material was only an armature to start the build up process. By the time the body was finished, it was a sculpture of body putty and wire and quite stiff and heavy. I have not built any models since about 1967 or so. I moved on to many different types of projects from motorcycle fairings to carved art glass. Now I'm into building stringed musical instruments from found objects such as cigar boxes, hub caps, African masks, tin boxes, dog food bowls, motorcycle parts, etc. I do intend on someday finishing the last model I started back in 1967. The body was finished and painted, but I never got around to doing the under carriage, engine compartment and interior. Jack