This C2 C3 Corvette 1963-1982 Front Sway Bar Kit is the easiest way to refine handling and get rid of body roll. Anti-sway bars transfer energy to the opposite side of the vehicle while turning, and significantly. If you you have an oversized front sway bar (1 1/4 or 1/38), then you need the rear to compensate for the large front bar. Corvettes with 255 or smaller front tires should not use a sway bar larger than 1 1/8". 275 widths can run 1 1/4, 315 tire widths can run 1 3/8 front sway bar.