Well, I could be your man !!!. I am currently doing the stages on expert level in Focus WRC and am in 1st place in the championship (alot of re-runs without saving though!!!) - currently on UK stage and it's a Bitch (driving on expert level anyway).
The following codes are what I wrote down whenI called however I suspect (If my memory ism correct)they may not work as I believe each disc also has an access code that you type in when you ring, anyway, worth a try:
Unlock all cars = ITDIXX (I'S maybe 1's - cant read my own writing !!)
Unlock allTracks = FMBLHX
Upgrades = OVQURL (Again the nought may be a Zero !!)
Expert = QQDTTZV
Parts = WXQMJF
Hope these work andif they do, it's saved you about a tenner as it's a £1 p/m phone call - and they do ramble on