I have a fully loaded 99 TJ steel front and rear bumpers winch sliders and full size 35 inch spare and some tools in the back. The Teraflex 4 inch coils have about six thousand miles on them and they're starting to sag so I was going to upgrade to metalcloak 4.5 inch coils since the Springs are designed for heavier rigs. But I don't want to buy new coils if they're going to Sag just as much as the Teraflex. Does anyone have any personal experience with what I'm thinking about? Really trying to find the length of the metalcloak coils at ride height. My Teraflex coils are 15.5 in in the front and 11.5 in in the rear. Thank you for any input!