Needing to get new springs for the ol girl. Existing. 4" spring lift with 11/2" longer shackles. Looking at Alcan because of custom springs. I see mixed experiences but nothing I can find that is new. I carry a lot of weight and my tubby trailer when we go out and want heavier sping capacity with 51/2" lift for the 35's. It looks like they take care of their customers but may have to send springs back to get things right. A lot of money and trouble not to get it right the first time. Questions also about bushing size, 80 and newer different than earlier years. Any advice or suggestions much appreciated.