I needed to address suspension sag after adding bumpers and winch so today and I installed Teraflex coil spacers. When removing the front set of 2.5" TF coils I compared them to my stockers and they are almost identical in length. For some reason I remember the TF coils being longer in length when I first got them 3 yrs ago. Am I wrong? Also, are the TF front coil spacers supossed to slip on with the stock rubber isolator in place or must the stock one be removed?

 

The actual height of the coil isn't a big determining factor, the spring rate is..........though the TF coils are known for sagging. As to your pucks- put them between the isolator and coils.