On my 2001 XJ Sport, with the original factory springs, my ride height is 18" front and 16.5" rear. Empty, no tools, no heavy bumpers, just stock. A good case of the sag! Can anyone estimate what I will end up with if I put in the Dorman 929-301 springs? Is it likely I will run into other issues in the driveline with the new HD springs, like sudden need to change the u-joints? I also have stock Monroe Sensa-trac shocks that are pretty new. Should I be looking at some different shocks with these springs? One other question, the Dorman shackles are pictured with bushings and bolts. Does it come as pictured? I plan on replacing the bolts and would like to know how many I need to buy from the dealer. Thanks in advance.