Will a 1997 GEO Metro engine sohc interchange with Prizm dohc?
No, a 1997 Geo Metro engine (SOHC) will not directly interchange with a Toyota Corolla/Chevrolet Prizm DOHC engine. They have different engine architectures (single overhead cam vs. double overhead cam), different block designs, and likely different bolt patterns. Even if you could somehow mate the engine to the transmission, many other components (wiring, computer, etc.) would be incompatible.