Randall, I assume you're talking about this article on the Pelican Tech site:
http://www.pelicanparts.com/techarticles/Boxster_Tech/11-ENGINE-911_Engine_Swap/11-ENGINE-911_Engine_Swap.htm
I would ask Wayne Dempsey at Pelican if he has any more info to determine if you're one of the "very early 1997 cars".
By pure BS luck it turns out my '01 has the most flexible DME if I want to go this route down the road.