i feel that it would probably be the same swap if not easier then the mk2 or any other non ordinary swap, if im correct the engine bay is a little bit bigger than the mk2 which should fit the 1jz in quite nice, just like any other swap, your going to have to redo all your wiring to support the 1jz and make custom mounts. after everything is mounted your going to want to put a 1piece or 2 driveshaft in , and swap rear ends, depending on how much power your wanting to put into this truck. hope this helps and good luck.