I've had a chat with the seller and I'm going to have a punt on this one. They took it in part ex, the boot is indeed full of oily bits and possibly (!) another wheel, and they just want rid of it. Its not driveable.
Ideal scenario is that it is repairable and I can keep an FE on the road. Worst case, the engine is even worse than my old one and its a basket case in which I'll probably have the only Dolphin Grey D2 with red leather. Middle-of-the-road scenario is I put a 650hp 2.7 biturbo and 6-speed in it and go a bit nuts