Yup. You buy any kit made for a mazda 3 like I did.
No, I got scared cause I got the ms3 GT with auto leveling HIDS. The motors and all the other fancy crap is not removable from the headlight housing so I had to buy a heat gun and melt the s*** out of the head light housing to take them apart..
I managed to put everything back together and re-melt it back into place for the most part. Now the true test is to see in a month if the headlight fogs up.
I will NEVER do that again. Both my hands are sore/burnt. My headlights are ugly (Not visible but the fact that I know I scarred her for life will always bother me.) I'll go run outside right now and take some pics.