the four.eleven gearbox that comes along with the JDM wrx is wonderful. the USDM WRX gearbox is usually a POS compared, believe in me. you will need to implement the correct JDM gearbox with the right JDM EJ20 motor.yeha, the sole harness little bit im missing may be the rear tail little bit through the SMJ. but 26 wires shoudlnt be that arduous to