There are a couple advertised on ebay at the moment, both the wide 427 version. There was a seller advertising on "Car & Classic" web site for 289 shape bodies but it isn't there currently.
Thanks for the reply.
The best price I can get for a new body is around 2,850 pounds.
As this will be a bit of a "project" I was hopping to find a used, re-worked or damaged body at a good price.