The Firestone Coil-Rite and Air Lift 1000 kits are very similar in design. They are both good kits and should last the life of your vehicle if run with the proper amount of air pressure. It would be difficult to say the Air Lift 1000 kit would last longer than your Firestone Coil-Rite kit without knowing what caused to current air bag to fail. Your Firestone Coil-Rite kit should still be under warranty. Feel free to call us at 1-800-358-4751 if you need help with a warranty claim or have any questions.