I have an 89 w100 that appears to have 3 inch lift blocks under the front leaf springs. I am assuming the previous owner wanted the front level with the back? Anyway I need new front shocks. Do I need shocks for lifted trucks or will standard size shocks work? I looked on Rockauto and the measurements for the shocks look very close. Also I am going to replace the rear shocks. There is the same size block in back as there is in the front. Is the back considered lifted or standard height?