Never did this program but 30 lbs of muscle is pretty much impossible in 6 weeks.. No matter how much juice you are on lol.
30 lbs of mass seems pretty much out of the question for 6 weeks as well. 5 lbs a week would be probably 15000 to 20000 extra calories above maintenance, which I guess would be possible but I think indigestion and stomach problems would end up causing some disruption while eating 5000-6000 cals a day lol.
30 lbs on squat max is possible though. Smolov jr ran twice might net more than that.