Don't cheap out with an eBay kit that's $35, you'll get what you pay for. OEM HID bulbs whether d2s/r are 4300-4500k. I wouldn't go anything above 6500k personally due to light output and reasons other that blue or blue/purple light output is just ridiculous looking and dangerous. If you're uninformed or ignorant or are into the whole rice boy thing, I guess it's okay. Lol
I wouldn't recommend putting an HID kit in your reflector housing headlights. Get a good pair of projector headlamps to do correct. I've seen some okay-tasteful projector lights out there for your car. The bulbs in any kit you get are going to basically be a d2s design, which are not meant for reflector housings. = lots of light refraction in unwanted direction & dangerous to other drivers on the road.
Any route you go, make sure you get a harness equipped with a relay and fuse. Of you don't know how relays work or how to wire it up, have someone who knows do the install. gl