What about the 312T...could it be that ? This is the one I have all in bits mixed in with the renault. I've lost the old instructions for it, but I'll take some pics of the mess of bits I have and post 'em up..
If the renault you are talking about is the Tamiya 1/12 Re-20, it was used in ROTJ models (The tower I am building used a fair amount of it). Don't know if they used if for any of the ESB stuff though