Originally Posted by tintnsound
As long as you have the V7 ECM to match the V7 trans you will be fine. Double check the ECM and transmission part numbers. When I bought my V8 drivetrain they mistakenly gave me a V7 ECM So I had to change my NSS. If you have to change the NSS the part numbers above are the USDM part numbers that will work with the JDM trans.
I think i might have this issue, my engine is EJ207DW4, which is 2002 Ver.7 and the ECU is 03 JDM STI, but i couldn't check the Transmission.