Oh man, I called around the usual auto shops and nobody seemed to have anything listed for STi or brembo calipers. Admittedly did not specifically call AP Canningvale.

Subaru quote the seal kits at $210 per caliper, I ordered mine from fastwrx in the US for $160ish AUD for both calipers.

I'll put up pictures of my rebuild process when I do it in the next week, already have the old seals out now. The dust boots were so brittle they came out in two pieces.

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MY08 WRX 325hp/456nm/18psi E85