After speaking to the DVLA this morning they tell me that it's OK to make up your own VIN number subject to a few guidelines.
Anyway, to make life easy for me and others I've created a VIN number generator which can be found here:
http://seven.locostsites.co.uk/
Let me know if you find it useful!
It may be useful to keep the 11 and 12th digits the same as the ford donor car, as these are the year and month codes - helps when buying/matching parts
Does that mean that you could make a VIN to read anything? Such as
FUNNYBAST*RD
Or is that too childish?
I was quite tempted by DVLAAREWANKERS