It's not a kingcat if it's balsa. All of the kingcats were composite. I have a first generation still and it's composite. I also have a bobcat XL. It is fiberglass fuse and booms and balsa wings and stab.
Kingcat is a 120 size jet, the balsa bobcats were 60 to 80 size though I've seen 120s on them which is crazy.