So I bought a Greddy emanage Ultimate with an '03 harness, which is about 5 wires different from my DBW '06 (1ZZ). I asked Boomslang about repinning, and they simply said no.
I contacted Monkeywrenchracing.com , and was told "sure!" and quoted $135. If Boomslang will not repin your harness and you can't repin it or find someone to trade with you, etc., try ringing up MWR. They're always helpful and polite. I am actually going to be doing this work myself thanks to certain people finding me the info I needed, as well as what is probably excessive confidence in my abilities, but I'm really glad that they were willing to do so for less than half the cost of the harness. That's an option I didn't think I actually had.