http://www.grandprix.net/upgrades/pcminstall.html check that out, refer mostly to line 5.
I do not think that the KSM would cause the fuel pump not to prime though chico. I could see it not starting due to the sensor not reading properly (like any grand prix pcm swap, you COULD need a case learn, but usually not.)
I am not saying it is not necessary, but this is an odd situation (no fuel pump prime).
but I guess at this point, anything is worth a shot!
I did not know that about the 97's, so good find chico!