Engine/trans swap from ZX2

I have two Escorts both 1998 one is a SE and the other is a ZX2 would like to swap engines from the ZX2 to the SE Was wondering what is involed in terms of the the eletronics/computer. Can I just swap computers? or is there more to it?
Terry

The wiring harness is different. But there is a chance that the SOHC harness can be wired to work with the Zetec and ran off of the SOHC computer. But I cant promis that.