Custom headlights, overlooked something.
 

So I bought a set of custom housings from a guy. They're OEM but painted, etc. Anyway, I went to install everything this weekend and found out that the bottom/base housing of the set I bought doesn't fit my take off ballasts. I have an 05 and I'm guessing the set I'm putting in came off an 06. The molding for the ballasts is smaller and will not fit mine. At least the drivers side is, I did not bother taking off the passenger at that point.

So I'm guessing that the 06 model cars came with different ballasts than the 05. That being said, what else will I need to replace along with the ballasts? Igniters? Different main bulbs? Anything in the wiring harness?

Correct.

bulbs and igniters and wiring harness should be the same.

So just ballasts? Not too much damage done then. Thank you