The search engine is your friend:
http://preludeonline.com/showthread....threadid=56691
The front subframe can very well affect camber. Don't confuse this piece with the front cross member that has the radius rods on it. This is the one that the lower control arms connect to. If it moves, they move, and it affects camber (among other things).
I can guarantee you that yours has moved some. No, this is not something an alignment tech will normally check, and most will tell you that this won't affect it or at least that they won't mess with it (not too fun to adjust). Insist or find a shop that will play with it. I can't guarantee you that something else isn't jacked on the car as well, but this is 95% likely your source of camber issues.