I just saw this over on pirate http://www.skyjacker.com/products-new-rocklock.asp , and wanted to discuss how hard it would be to build your own currie antirock-like sway bar.

But first, let me make sure I understand how these things work. Basically its two arms connected by a torsion bar in the case of a bar like the one above, right? And the kind available as OEM on most vehicles, how do they work? I never have really payed attention to them before chunking them in the trash. Basically they're just a large rigid bar shaped like this |__| with bushings holding them to the frame, right? Or do they allow some torsion like the aftermarket kind above?