It's the shocks not the springs, buy the right shock and it will improve the ride.the higher coil rate makes the rear springs work better and is a lot more stable.I never could find the coil rate on a full traction coil, but i know it's not anywhere near a 3" sky jacker or bds coil, i run bds coils and there 3" coils are the highest rate on the market for a 3" coil 240#/inch. and they work great.