QA1 sway bars complete the suspension upgrade for the front of 61-71 Dodge D100s. For use with QA1's crossmembers, control arms, these sway bars are made using 1 // hollow 4130 chromoly steel with a 3/16'' wall and are designed to improve performance and handling. These directly bolt on to QA1's crossmembers and lower control arms and are not designed to work with factory leaf springs.