CUSTOMIZE GENUINE TOYOTA OEM 1JZ 2JZ-GTE REAR SUMP CONVERSION KIT. GENUINE TOYOTA 1JZ 2JZ-GTE REAR SUMP CONVERSION KIT. can be used when converting a front sump JZ engine such as a Chaser, Cresta,Mark II or Aristo to rear sump setup, which is great for engine conversions aswell.