My yellow sticker says 1366 pounds payload available. My GVWR is 7100. So that means the curb weight of my truck is 5734. However, the CAT scale says the curb weight of my truck is 6030. So the stuff in and on my truck, such as Rhino spray-in bedliner and camper shell, weighs 296 pounds.
Only the CAT scale knows for sure, so spend the $10 so you will know for sure.
Grumpy ole man with over 50 years towing experience. 2012 F-150 Lariat SuperCrew EcoBoost, 6.5' bed, Platinum White/tan, Leer 100XQ camper shell