Are you up and running already on the 0411 on your L31? You are probably running some sort of 01-02 L31 express van calibration now.

If you are running a cable throttle, you will use a Camaro LS1 calibration as teh LS1 Camaros run cable throttle.
If using ETC you will run a Vette LS1 calibration as the LS1 Vettes run ETC.

peace
Hog