Most of the HID kits you find on ebay are cheap and usually don't last too long from what I have heard, I have a vvme kit because others have had good luck with them. I had one of my ballasts die and they have terrible customer service. I send 5 emails, called 3 times left 2 voice mails and never got a reply until one day I called I got through and it cost me 10$ to have it replaced because shipping from china. If I would do it again I would go with TRS or Diode Dynamics for the warranty and customer service but they are more expensive. I haven't put HID's in spyder projectors, so someone else with them would have to chime in on the wiring but it is possible, search around you can probably find something.
You make the call on the Bi-Xenon vs Single beam, what i showed it in my video is my results from them. If you get the Bi-Xenon you have to move some pins around in the connectors because its wired wrong by default from the HID harness.