Firestone only offers their Ride-Rite Air Helper Springs # F2430 for your 2007 GMC Sierra 1500 to include the air springs. I can assure you while you may be able to order all the replacement parts it just makes more sense to get a new kit. This is because the kit only carries its warranty for the first vehicle it is installed on. Once you move the kit to a different vehicle it voids the warranty. While we do carry the main brackets and some of the components several of the parts would have... view full answer...