You can get a set made by DEPO that are the factory Xenon type units....then order the D1S HID Kit for them, plug and play and boom, got factory Xenon look for around £250. £100 per light unit and £50 for a HID kit. That's what i'm doing when i get mine. Did exactly the same with my Fabia VRS.
Here's the link on DEPO's site....(can't post it cos i'm at
lower than 15 posts!) but go to google, type in DEPO headlights, then go to their site, click "products" then type in the model of car, just write "
ibiza" click the blue PDF Document on the right and when it loads up the unit is on the 3rd page, 3rd unit down on the left hand side.
You can call WINGMIRRORMAN.COM and they can get them for you. That's where i got the Fabia one's from and quite a few of us did it on briskoda. IMO spending a little more cash and getting the complete look is way better than fitting a HID kit to standard halogen headlight units.