May I ask what you paid for the JDM control arms? You sparked another question for me. The SuperPro alloy arms advertise increased castor but they also come with ALKs so I suspect that's where they're getting the increased castor.
We have a place in Denver that sells used Subaru parts and while in there this week, I saw a set of aluminum control arms.. I think I'll ask about them tomorrow. I'm enjoying the conversation!