http://jimwolftechnology.com/wolfpdf...WIRE%20MOD.PDF
There's the pdf from JWT, shows how to use a 95-96 ecu in a 97.
I suppose it would be the reverse of that to use a 97 ecu in a 96.
But it's really not something you ever need to do, cuz nobody tunes 97 ecus, and 95-96 ecus are more common and cheaper.