i have a 87 Olds cutlass with a 455 engine. trying to soften the ride a little. the car rides like a truck. when pushing down on the front are back the car seem a little too stiff. the owner before me had 20 in. tire on it, the front seem to have coil over shocks . the rear has air shock that leaks. not sure of rear spring rate or brand. I'm getting rid of the air shock and replace with stock are something a little better. I've read the Moog 5658 are a good upgrade, the front I'm hoping I can adjust them. just looking for a nice comfortable ride.. the car is just a daily driver. not looking to lower it. with stock 14 inc. tires it has a 27 inc. ride height. I'm putting 255/60/15 on the back and 235/15 on the front.