Recently fouled the #1 cylinder in my 01 9-3. Pretty sure it needs major surgery, at the least a head gasket or valve service but I'm guessing piston rings as it's burned a little oil as long as I've owned it. Also have 97 900 parts car (almost the same car ,same 2.0 liter turbo engine).How compatible are these motors? Computer fried on the 97 (automatic) and the 01 is a 5 speed. Will the difference in transmissions greatly complicate things? Ideally I would swap engines and rebuild the original at my leisure.