Toyotaguy

I have a 96 T-100 with 5VZFE, 2 wheel drive, reg cab, and man trans. The ECM for this truck is hard to find. The question is does anyone know if you can use the ECM from a different combination, say like all the same but extra cab instead of reg cab? All the versions have different part numbers. All I'm trying to do is find something easier to get and buy some for spares.