I am not a performance type guy the contour I have is just a 4 cylinder so I would like to try the springs out and the struts I bought are a mcpherson type strut nothing fancy. The goal of my tour is juist to make it look nice after all I drive it 110 miles a day for work so i didn't mind getting the 4 cylinder. I did gett eh instructions with the springs and it is a little confusing for me but after all I am a football coach not a mechanic for cars lol. Any help is greatly appreciated.