You've got to remember Seb that its most likely over 10 years old now and even those dreadfully exciting Japanese things are going to have the odd deficiency at that age.
If you totted up the bits that needed doing you only need to allow that when you make your final offer. The overall condition,feel and general demeanour of the vehicle should give you more information as to whether its been chersihed or treated badly. If its the latter then walk away as their seems to be a few around....but theyre all at least 10 years old!