I think thats the 1st time I have ever seen someone screw up know/no that way.
Being that they are Sparcos least expensive competition designed seat; I will say that they are probably VERY uncomfortable. Competition seats are generally shells meant for you to add a removable padded/foam insert. Even then, its built with the thought you will be wearing a significant amount of padding in the way of a fire suit.
I recommend you buy them! I just hope you don't enjoy comfort very much.