the front left strut changed in 07 as the spring is right hand wound and on the 06 and prior both springs were left hand wound. if you were changing out the entire assemblies (strut, spring, tophats, etc) then they would bolt right up, but you cant interchange just the spring or strut etc. the sc suspension has a different spring rate in addition to the ride height being 1" lower. i dont think that there is much difference between the struts on the sc and the regular element for the 07-up model years. but even if you put struts for the 07 up on your truck you would then have to get the 07 up springs and rest of the assembly.