Whether Stanford plays a tremendous amount of zone or not, I don't see any way around them trying it. IMO Texas is going to beat the ever living **** out of them off the dribble if they try to stay in man.
My goodness, forget Mason and Augustin, both of whom are going to have a field day. Give the ball to Damion or Connor, clear out for them, then watch them grind the Lopez twins to dust off the dribble. Johnson too if they get him the ball 12' from the basket and he only has to do a couple of power dribbles to get to the rim, assuming he's healthy.
I just don't see how Texas doesn't make mincemeat out of the Stanford starters in man to man, unless the Longhorns are just not hitting shots, or one or two starters get into foul trouble.
I realize they haven't played a whole lot of zone, however, they did play plenty against Marquette --- again, to stop the dribble penetration more than anything, and while Marquette's guards are at least as good as Texas at attacking the basket, Marquette isn't as good at hitting 3 point shots, and they certainly don't have the equivalent of either James or Atchley, much less both of them.
As far as UT's transition game, one thing Texas doesn't do under Barnes is dictate tempo all that well. Barnes would prefer to defend by staying in front of players and not taking chances. He might double off of ball screens --- which I'd LOVE to see, especially if Gary is 100% --- but we all know unless they're behind, Barnes is going to have Augustin bleed the clock pretty much every time down the floor inside the 10 minute mark, particularly if Texas has a multiple possession lead.