all i can suggest is that you keep an eye on rcmart, they have restocked the f103 rm 3 times since last November with 30 kits each time being sold out in a couple of weeks , of course you could hang off for the new f103 with the merc le mans shell that tamiya has listed as coming soon on tamiya America ,
http://www.tamiyausa.com/product/com...p?sub-id=36100 ,
tamiya are no doubt frantically working on more as there seems to be a mass revival of the f1 class, no wonder they are superb fun,