Conclusion - I didn't buy it and had to get the train home!
The engine sounded OK, and the VX while noisy (might be normal, I don't really know what they are supposed to sound like) wasn't enough to put me off. The condition of the shell was what did that. The sills and floors looked solid enough, but there was some rust pretty much everywhere. The bits that really put me off were on the scuttle, A pillars, and above the windscreen, and also around the sunroof. Thinking over it now, there was also some under the black plastic panels in the C pillar which might be awkward to fix too. It looked like someone has painted over the original silver/grey with some matt grey paint - that doesn't bother me so much, but not knowing what's under the "surface rust" in those significant locations did.
So it's still in Preston, and I still have an empty garage.
