Big advantage is weight, two composite springs weigh about 16 lbs. The stock 3 leaf springs for the car are right at 40 lbs. each, so a net loss of 64 lbs. The '57 will also have housing floaters, ladder bars, and sliders instead of shackles. Disadvantage, about twice as much money.

We had them on a late model circle burner many years ago. They stand up very well to racing so they'll do great on a street car! Lots of options when you order them including rate, center bolt location, mount size, lateral stiffness, width, etc.