I'm afraid the number given is not the serial number of the radio.

The correct serial number will be in the form M123456 or V123456, where 123456 is any six digit number.

Should you manage to obtain the correct serial number, if it begins with an "M" then you can obtain the code yourself using:

www.pumapeople.com/decode.php

However, if it's a "V" one then Ford Main Dealer or there are people on Ebay who claim they can do them.