Please do it right and go with projectors. I am doing this mod right now. It's taking me a while because I am doing it a little at a time. I bought a set of new aftermarket housings from fleabay and am modding those. Bake them for 20 min and they open right up. Use D2S projectors and they clear the lens fine. All you need to do to the housings is make the bulb hole larger.
With the extra housings it will be easy and fairly quick to swap them in. I bought a relay harness to keep the wiring quick and proper.
Here is a link to a whole kit. It is pricy but everything but the housings is included.
I bought the individual parts from fleabay.. It was much cheaper that way. I also went with used ballasts and bulbs. Got Matshush*ta ballasts and oem bulbs from a G37 for $65.00. 35 watt will be more than enough and I wanted brand name ballasts and bulbs. Better quality and I can get a replacement bulb anywhere. Those plug n play "kits" use oddball bulbs that are not available everywhere.