Well if that's the case, of course his system is capable of doing higher than it is. However, a LOOOONG time ago, he said he knew/knows he can do so but basically, he doesn't want the box bigger than it is... if you notice, he put his new subs in the OLD box. He, and we all know that all the builds he does and the money he spends, he can "buy" better numbers (so to say) than he's doing now. BUT!!!... long story short, he does NOT want to wall it off, he wants to keep the back seat, and whatever else he said about it. I don't remember... All that time he had spent on that Escalade, he could have done the same for his Tahoe. But he didn't... not because he couldn't, but because he didn't want to. So in other words, YOU ARE 110% RIGHT when it comes to the facts. But as far as what the dude WANTS to do, NO ONE can say anything.
