The problem I am experiencing is this.. the real reason I am buying the car is that he stated the motor was rebuilt 20,000 miles ago with forged internals. He added JDM heads with a mild port job. My thing is he told me the ECU was JDM to control the AVCS on the heads. So I check the ECU- Non JDM. So now do I believe him about the heads and forged internals. This could be a bone stock 106,000 mile USDM EJ20. My EJ20 is running fine with 112,000 miles but it is my daily driver and I want reliability 1st, power 2nd. So instead of rebuilding one I thought this was a good alternative.... buying one built. My goal now is to verify the heads..to see if they are JDM. From what I have read it looks like I may have to remove them to truely know.