I was going to do a retro fit to my 06 wrx, but ended up buying a set of sti oem headlights.

I have a pair of oem sti ballasts in perfect condition with phillips d2s bulbs.
price is $250 shipped
will post pics soon

Also have a pair of TSX projectors that are in perfect condition.
price is $180 shipped

buy both for $410 shipped

I also have a pair of h7 to d2s bulb adapters that I baught. These will allow you to plug in your d2s bulb into your h7 projector housing without any modificiton to the bulb or projector.

$7 shipped

pm me for offers or questions

I am located in New Brunswick, NJ 08901
if you want to pick up, i'll reduce the cost of the item