Trucks have shocks. You have struts and springs. If you are going to get new sturts you dont have to replace your springs, springs are what will determine your ride height though, so if you want a lower look you will want to get new springs and if you want better handeling you will need to get struts as well. I have TEIN s tech springs with stock struts and for what I do they work ok for now. They lowered my car about 1.5 inches and help with handeling, not too much, but they did help.