have a 2000 2.5 rs what motor is compatible withe least work envolved
The motor that origionally came in that model, a non turbo DOHC 2.5l
Only the 1998 2.5 RS was DOHC, 99+ has the SOHC 2.5L. You can get almost any EJ251 to work from a 00-07 Impreza, Forester, or Legacy, but you may have to swap cam gears and sensors from your RS depending on the motor you chose.
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