there is another company (unknown to me) working on the 1/24 FXX but looking at the pictures, it's a complete kit.
See this :
http://www.raccoon-auto.com/minicar/.../ejan/e804.htm
Some time ago, a guy focused on the 1/18 transkit was working on a 1/24 scale transkit for the tamiya, I saw it on Ferrari chat.com:
http://www.ferrarichat.com/forum/sho...ght=1%2F24+fxx