I have a mazda 1990 b2200 pickup truck base 2.2L engine fuel injection automatic transmission and i am looking for a replacement ECM/ECU. The OEM# is B6DF18881. It's really rare to find a exact replacement for this vehicle so i was wondering if i found a ECM/ECU with the same OEM# as a my pickup would it work? the car with the same OEM# is a Mazda MX-3 1995 The MX-3 has different specifications such as a 1.6L engine and a different engine type number (L4-1597cc) than the mazda pickup i have (L4-2184cc) I'm wondering if these two differences would make the MX-3's ECM non-functional for my pick up truck? any help would be very appreciated, thank you