I had an alignment at Evan's tire and they said my caster was way out. They recommended me to a special alignment place which can adjust sub frame and all. I took my car in today and they were able to nearly clear up my caster issue, but said that there is no more they can do. They showed me that behind my left wheel there is about 3 fingers snug of room. On the right there is more than 3 fingers, so they aren't perfectly in align. The guy said 90% of the time it will be the lower A arm that is slightly bent. It's already curved from the factory so it's hard to know if it isn't perfect or not. He doesn't recommend trying to fix the arm, but just replace it.

What do you all think?
Where can I get the best deal on one of these?