Tires for 2000 Silverado

I have 2000 Silverado 4x4 with 285/75/R16 buckshot mudders and i want to go bigger... i also have a 3'' body lift. How much more lift do i need to fit some 35's on it, or can i already fit them...

The help would be much appreciated.

As your sitting with stock wheels I think you could almost fit with a 3" body lift and a little crank of your TB. Is yours half or 3/4 ton. I would go down to your nearest tire center and crank your tb about an inch and see if they fit. As long as your running stock wheels or wheels with lots of backspacing I think you can do it.