i want to convert to xenon but i still want to keep as close to OEM as possible. What kind of ballasts and or bulbs should i get?

 

what do you mean by keeping close to OEM? like the color temp of the lights? the only thing you do when getting hids is a different bulb and adding a ballast. the housing doesn't need to be changed at all. the 4300k is very close to what most cars that come with hids have though

 

I meant like OEM quality. Something that is good enough quality that is comparable to what audi uses in vehicles with stock xenons.

 

well vvme from ebay is the cheapest you'll find anywheres but there was a few complaints before about it but i havent' heard of any for a while. the 4300k is what you'll want for sure though.

 

LLtek has some really good replacement headlights. Here's the link.

http://www.lltek.com/a4_b5_indx.htm

 

All you have to do is search. There are threads about "after market headlights" and "HID headlights"

No need to start another one as any of these will answer all your questions.