You have a bigger heavier car which might help out on the ride quality. You also have to match your suspension as a package. If you have soft springs then a stiff shock is a good match. It sounds like the OP has both stiff springs,leafs and stiff shocks. I had a set of KYB's on my 2nd gen and the ride quality was horrid. I took brand new KYB shocks off of my car and tossed them away. I installed a set of Bilstein's and the ride quality was night and day different. I think the silver ones are GR2's or something close to that. They have a softer ride.