Caitlyn T ~ We do have some teachers who use Gratz springs in our Tower and Cadillac classes. I recommend looking at classes by teachers with Romana's Pilates and The New York Pilates Studio® to see those classes. Also, since the Gratz springs are typically on the heavier side, the closest setting on a Balanced Body Tower/Cadillac would be red for the arm springs and purple for the leg springs. I hope this helps!