Put on a 2014 JKU Rubicon. It took about an hour to make a 90 degree turn on a Texas spring afternoon. This included adding 1.5 inch wheel spacers at each corner. One person operation with two jacks and one floor jack. Spring compressors are not used, but wood helps more in the rear. The trick is to twist the feathers back and forth. The work is not difficult, it just takes time to get everything right. Exhaust spacers are not required. There was a problem with the Magnaflow Cat rear exhaust because the rear axle was touching the spring, but I only cut the exhaust tip 1/2 inch. I will add brake line mounts just to be on the safe side. This clears my 285/70 r17 Durateacs. This keeps me going until I hit 35 seconds. I use beach/soft sand for fishing, slippery, muddy and grassy areas for hunting.