Good thought Keith. I checked our two cars and this is what I found:
'91 Legacy Engine: EJ22EAW1BC
'97 Impreza Engine: EJ22ECW6FZ
'96 Impreza Engine: EJ22ECM5GB
I went looking through the FSM for the '92 Legacy I have and although they have a detailed explanation of the VIN meaning, there was nothing to describe what the letters mean in the engine designation. Maybe others can post their numbers to see if we can make any sense out of them. Better yet, anyone know how to decode the numbers?
Do any of the codes you've read match whats on the plate riveted to the drivers side inner fender? I do believe that plate contains the engine code, trans code, color code, and more.