I have seen Burklands do a "Shakedown" run at over 400 mph... somewhere around 1/2 throttle, This is the first pass after driveline failure two years ago. If the salt is as good as they say it is, I would expect a 425+ mph pass. This is based soley on my opinion. I feel that if the salt is that good, Tom won't waste a chance to put some power down and really test the rebuilt driveline.
You could see a sleeper in the Poteet & Main entry to go over 400 blown.
Nish is always there waiting for the big speed Naturally Aspirated out of their liner and you never know what Nish has under his sleeve.
Im sure there are a few others who could put down a number, however those come to mind right now.
Jon