What do you need to know? The 2jz-gte is a different engine family, with different block casting, design, and heads. The design changes are a part of why the engine develops more power. As such, engine management is also different. It is not a direct drop-in replacement for the 7m-gte. A lot of stuff has to change to get one in. I understand the subframe for the 7m-gte is different for the 2jz-gte. I'm not sure about the differences in clearances.
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