I tried almost everything else without success, so naturally I had my doubts. My husband even said, "they only boost an inch, how much could that possibly help?" But it really has been a night and day difference like other reviewers have said. I went for an all-day road trip the day after the front jackers were installed, and for the first time in ten years, I did not suffer from debilitating back pain during the trip and for days afterwards. I also noticed that my body is more stable in my stock seat during turns and bumps that were previously felt more sharply right up my spine. I have lots of problems in my SI joints and L4-S1 discs. It feels like the jackers took the pressure off these areas. Since installing them, I haven't experienced the overwhelming radiculopathy while driving that I always used to get after 30+ minutes behind the wheel. I am so grateful for the massive reduction in pain. The quality of life improvement has been priceless for me. I am also happy to see that Desert Does It makes the jackers for lots of makes and models, so I will be covered and be able to get more when I eventually need a new car. Thank you so, so much for this wonderful product! You've been able to solve a pain issue for me that doctors and PTs could not.