Purchased for my 2004 Chevy Silverado 1500 as my old coil springs were starting to sag in the front and I even jumped with the new shocks. I spent about 5 hours trying to get the old springs out with a compression tool but no luck. I took it to a local shop and they installed it for me. I was a little surprised as these reels are a bit shorter than the original reels, but the smoothness has greatly improved. Tip: Be sure to buy new spring seats as well.