That is to be certain correct efficiency using your current electronics and to confirm passing of neighborhood emissions demands in The us. Though some essential elements like water pump, timing belt, timing chain tensioner, etc. should be Outfitted on engine, these components MUST Surely get replaced with new elements. Listings https://jdm-toyota-2jz-gte-vvti-f27147.wikiinside.com/1635820/the_definitive_guide_to_jdm_toyota_2jz_gte_vvti_for_sale_built_2jz_gte