I actually just checked the Bentley for you again because I hadn't noticed that you had the 4 Mo the first time I replied. I am assuming you have the V6 since you've got the 4Mo. Here's what it says for you:
2001MY, 2.8L, 4Mo
Front brake disc = 312mm x 25mm
Rear brake disc = 256mm x 22mm
Sorry about the confusion before.