Moroso Specially Engineered Springs Sets to Reduce 60 Foot Times which will Greatly improve the Spring Sets Line Traction. They will also Reduce 60 Foot Times by 2 to 4 Tenths! Moroso's Spring Set Reduces Axel Torque Reaction through the use of carefully matching Linear & Progressive Rear Spring Rates that will give you some extra Reaction that you were looking for. Progressive Rate Front Springs will greatly improve Load Transfer to the Rear Drive Wheels During Acceleration