The Black PCU for 03s cannot be modified to colours, the drive end does not seem to match. We have been able to rebuild the Colour PC units from Black; both the PC units need to be gutted, serviced and parts interchanged from the new Black PC unit to the due Colour one to resurrect it. I have done a few and it is no easy task. Yes the Colour PC unit is 3 times the price of a Black one.