I have finally found a little time to chase this issue again, from what I can see on the parts websites there are a number of options available.
Pretty easy to exclude the part required for an automatic, however the remaining options are different depending on whether that car has PRT (I have no idea what this is or how to find out)... I have read that some of the 2003's did and others did not have PRT, is there any easy way of finding out?