Straight Sawps (no overly serious custom work needed): 5EFE (Paseo etc.) 5EFHE (Sera etc.) 4EFTE (Starlet GT/Glanza) 5EFTE (this is not an off the self engine but a hybrid between a 5EFE/5EFHE and a 4EFTE) Other swaps that I have heard done successfully but require more work: 3SGTE (MR2 mk.2, Celica GT4) 4AGE (MR2 mk.1, Various Corollas) anything other than these is AFAIK unchartered territory - be different! get the hacksaw and copydex out and see if a 2JZGTE will fit!