You need VCDS coding plus different plug connectors.Do you have the headlight washers and levellers already as these are necessary for the car with xenon's to pass the MOT.
Levellers aren't built into the headlight You will be able to pass your MOT without levellers and washers, but it isn't strictly legal if you ever get pulled over etc...
I am considering a Hids4U kit. Not sure if anyone has gone down this route.
Technical for HID Conversion KitsPlease remember that it is your responsibility to ensure that the items purchased are suitable for your vehicle make/model and that the use of said items complies with all applicable laws in your Country. In the UK, fitting an aftermarket HID kit is not technically road legal as you are replacing a halogen bulb with an HID bulb, because of this the HID bulb cannot be E marked, which is a requirement for it to be road legal. Therefore our HID kits are sold for off-road use only.