Question about HID kit

I have a 99 camry 4 cyc. I'm trying to put a HID kit on. Well, the thing is my camry using a h4 (high/low beam together). Question is do I need to buy a hid kit with high/low beam together or I just need the h4 low beam only? Anyone have any idea, experience please let me know. Thanks!
One more question, Is XD7 hid kit is good as Mculloch hid kit???? any recommend hid kit out there??????????????????//

First off there are some tricks you can do with h4 bulbs and hid bulbs to make the hids fit the camry. I recommend you buy 9000k or 7000k hids with H4 housing. IF not, To make these bulbs fit it will require some modding, buying some crazy glue, silicon, two cheap h4 bulbs, and a bolt cutter.

Steps
1) carfully cut off the aluminium housing (on the bulbs not the car) surrounding the h4 bulbs using the bolt cutter.
2) slicon the h4 bulb housing you cutt off to the 1 hid bulb, once dried crazy glue it only to the silicon.
3) HIDS do not have low beam or high beam, its just one beam setting running at a steady tempature (hiD's are crystals that turn into gas which discharge high intensity). all cars that come with hid's have there separate highbeams compartments and high beam bulbs.