theres a couple of good guides on here if you use the search function, if its a 6 pot engine & its been looked after properly that mileage shouldnt be a problem, i would be more concerened with the general condition.
regards
I just bought a 125000 04 plate, check clutch and ask if it has had a new dual mass flywheel (DMF) fitted recently, i have just had to have both on mine and only having it for 4 weeks was not happy with the £800 bill !
Also you may be in line for a new MAF as mine just failed, cost £225 !
Springs are the other thing to look at, make sure there not broke !