CraigK and Netjunkie, thanks for the info on your dynos. Two very mildly '01s dynoed up at Carlisle and both registered 337-338 rear wheel. So, it appears that your numbers are in the ballpark.
I guess i am hoping my '02 will measure in the 350's at least considering the Vortex system. Yes, I should have baselined first, but I just brought the car up from BG in time for Sat Carlisle and i had a great deal going with the Vortex pieces and install - so I went for it. Since the car needed to do a relearn for at least 50-75 miles, even the dyno operator said wait.
So, I do have a copy of '02 numbers, some from the Corvette forum and one from Jim Hall's test. Jim's car was running on California crap fuel in undoubted hot weather, so I think his 337 rear wheel is a little low. If accurately rated at 405, the '02s should be making 345 or so rear wheel, and other prelim tests show they are making this on some other '02s.
I will be running Sunoco 94 always, and especially on 9/22 Dyno Day! Hope we can get some Z06vette.com turnout that day - let me know. BadAssZ06 is already coming...