How hard is it to fit a 1zz-fe engine from a MR2 into my Corolla ? I have a Corolla from 2001, the 3zz-fe I have feels a bit dull, so some more power would be nice. What has to be changed to fit the new engine ? Anyone done this ? And the last time I asked about my car, someone told me that there is no 3zz-fe engine. That's not true, 3zz-fe is the european verision of the 1.6L engine, with VVT-i.