Jon, I hope we haven't hijacked your thread but I hope you can sell the brakes with the help of this info! Price you are after is very good by the way as the front calipers alone fetch around $300-400 mark.
Simon, I can pass on the trace of the bracket if you want. Let me know.. Also, two small spacers have to be machined as well; about 10mm thick with a 12mm center and the plate is around 9-10mm thick.