I finally got box collisions to work, it turns out I was missing the line "PhysicsSettings.SetPhysical(true)" which actually turned on the collision physics for the walls... I found it by digging through their examples of working vehicles and avatars. I really wish they would have some documentation... or commenting.
There are almost no comments for their methods with hidden source codes. This makes it hard to figure out what I'm supposed to be doing with them.