I gapped all the plugs down to slightly less than 0.040", probably sitting at 0.038". And I installed the MSD high performance COP for the 2000/2001. The vehicle is definitely more peppy. Shifts now have more of a hit to them, there is more power, and throttle response is better. But I can't definitively say that the perceived miss at 1800-2200 rpm at higher loads has gone away. I'll have a better idea after my upcoming road trip.
On a side note, I'm not sure why people complain that much about servicing the plugs with the COP setup. It took me 10 minutes to get the COP assembly off the vehicle, but I suppose that's still too long compared to 10 seconds to pull off a plug boot.