I put an 89 engine in my 91 Shadow. I remember the plug on the back of the compressor for a 91 is different. Also the plug on my TPS had a different plug also.i need the whole shabang comp and harness and if its a T3 i will need that motor!! i have a 88 2.2 T1 in my old daytona and i was told that i could use that engine with a 92 comp and harness as all of the sensors and that are mostly the same!! or does anyone know if a 91 SBEC comp and harness will work with a 88 2.2T1 ??