Question: is a 2jz an interference engine?
Answer: 2jz-gte, both non-vvti AND vvti are NON-interference. This changes for the vvti engines (and, debatably, for the non-vvti) if greater than 272 degree cams are installed. Also, the procedure for changing the JZA80 vvti timing belt is the same as for the lexus IS300.