They're there. Huepel has always used a base of normal 3wr shotgun with the TE on a wing or in the h back position and the wide out playing outside the numbers. Pay attention to the motions. That's where the stacks end up. They rarely line up in stack.
Small, Wright, and Sampson averaged a little over 6.26 YPC between the 3 of them. I think we wanted to keep the game plan as simple as possible, and when you can run it like that, you don't need to get creative in the passing game.