what kind of HID do i need to get that can plug rite in to my JDM headlights so that it can have a little blue, like bmw....im not to sure about the 6000k stuff....of 9000k....i want something blue, but not too blue....something like bmw or audi is nice

 

If you're JDM headlight housing's are made for H.I.D., then get something under 5000k. The projector in it will make it appear that blueish color you want. If you want the Audi look then 6000k does it for you.

 

How are the HID housings different from the non-HID housings??

 

the optics.. they reflect the blue/purple hue, but the light reflected onto the ground is pure white.. IMO, 6000K and up, those kits are a pure waste of money.. the audi's, BMW, etc..every factory HID car uses sylvania 4100K bulbs..