Thanks for your answers all, and also for pointing out that it needs to be a 2000 version, I'd forgotten that there was a flat one.
As for the ones for sale, there's a reason the first hasn't sold yet, the second (as far as I remember) has the early grille arrangement, the car in the third ad I've already had the doors and wings off, the bonnet had gone, and the last one... well. It'd probably be easier to buy the wheels, melt them down and make an aluminium bonnet.
I've given Neil a shout about the one he's offering anyhow.