Yes but I put what palfingers drawings said for the truck. They gave me a curb weight and a max weight. It doesn't add up to the springs though. My curb weight is 54k and my max is about 59k. The web site was done before I actually put the truck on the scales.On your footprint truck diagram (on your website) it says your Gvwr is 50,990. That is why I was confused, cause if you are 20/46 wouldn't your. Gvwr be 66,000?