I don't know what the new equalizer hitches are like. I bought a new one, I think it was just after they came in to being around 1968. The spring bars were the old style with the chain hook up to either side of the trailer tongue. I have 5th wheel now & don't use it much anymore except for towing my utility trailer. If the new ones work anywhere near as well as mine you will never need another. It eliminates the need for any kind of anti sway device if set up right. Or mine does anyway. Used it to tow some very large and very heavy trailers. Never had a problem. For me noise was never a issue.
