The harness on a JDM motor will not work, its made to fit a RHD car. Secondly my experience with JDM motors has been bad, they all claim 40 -60 miles.... is it a TT motor, if it is probably the turbos are bad, injectors etc. Its a roll of the dice, you really never know. My recommendation is get a short block from Kyle at IPP... its more money, but that way you will have a reputable Z engine builder to back up his workmanship. good luck.