I haven't found any yet. I was told there were only 2 mfgs and maybe Eaton Spring now. I used ones made in Canada, Mexico, and even one a well known vendor said would work fine. They all required the 8" bolts to level the body. Some are a little wider and the 4 bolts hit them requiring grinding a radius in the spring to mount it. The glass ones require new shocks and had them same issues in addition to breakage.