This suspension features luxury ride coil springs matching OE coils rates that are specifically designed for gas or diesel motors. A heavy duty track bar relocation bracket properly centers the axle and matches the steering angles created by the supplied drop pitman arm while the radius arm drop brackets maintain the Super Duty's O.E. caster angles. A steering stabilizer relocation bracket maintains proper steering control but a RC problem solver single unit is recommended with larger tires and a RC dual stabilizer is required when running 37in tires.