Here is a screen shot of the tables with HP Tuners. It's for a 2005 GTP but it's super similar to the 97-03 cars, I just don't have a screen shot handy at the moment.

There is a base AFR of 12.4 but then the ADD VS RPM table shows how much fuel is added over time and as the RPM rise.

You can see it gets fairly rich after about 6-8 seconds. This can vary slightly and the real AFR should be close to that depending on air temps, air density, engine health etc etc etc.