I'll say it again too....its plug and play.
You can run/repin the AVCS through the TGV wires since they are shielded and go directly to the ECU, or get the IAP harness kit like N8WRX
mentioned. Besides the AVCS the only other difference is the JDM EJ207 does not run one of the sensors on the TB. I think its the temp sensor or something, all that you need to do with that is leave it unplugged. If you pin out all the pins on the ECU in the JDM vs USDM harnesses with the diagrams you will see the holes where the AVCS goes is empty on the USDM harness.
.....I dont like the www.northursalia.com
thing its not helpful at all. cross reference the EJ207 info on here....