This forum is pretty inactive nowadays, so you probably won't get any offers unfortunately.
Much as I detest facebook, I would suspect you have a better chance of finding something on f/b marketplace than in old style forums. If you are prepared to use facebook, there are quite a few MG Rover and ZR groups you could ask on. Most of what you will come across are likely to be scabby old rust buckets, with a catalogue of other issues which the seller won't have told you about!
Good luck with the search. There are good 160s out there, but it can take some while to find one. You could also consider a 120 - at the lower end of the rev range, there is little to choose between the 120 and the 160 performance-wise, although the 120 starts running out of went beyond about 4000rpm, whereas the VVC keeps pulling away.