Volones -
Welcome to EM! I always like to think that the MX-3 is the "Mazda CRX". Very nice little car to work with.
Wiki has a cool engine swap chart on the MX-3 :
Comparison chart of typical MX-3 engine swaps
It looks like you could even downgrade the engine if you wanted to, but the ECU/PCM might get upset with that.
CarloSW2