Earlier i was thinking about installing a RB20DET into my Z31 Turbo but i have decided against that and i was thinking that i would rather just replace the motor with the original VG30ET, does anybody know where i can find a Crate/Rebuilt VG30ET and also where to find a good Transmission. I don't want to rebuild the motor in my car unless i have to, i would rather put a certified rebuilt motor in it, maybe one from nissan. I have looked on a Nissan Parts website but they only have the non turbo motor. Any advice? Thanks for the help