MY03 STi ECU into MY03 WRX?
 

Been offered an Ecutek'd STi ECU from an MY03 STi and wonder if this will fit in my MY03 WRX without any other changes?

I know a remap will be required which I'm fine with, but the price of the ECU with the license on is very good and makes it worthwhile if its a straight swap.

Any ideas?