The only way to be sure you can run 35's is to lift 4" or more. However, with the varying results out there with just a level and most that run the 2.8" Billies reporting that they have no issues, I'm leaning towards a 3" bolt on lift with 20x10 -18 offset wheels. My tire shop is going to take a look at how I sit now and try and help me figure out if this will probably work before doing anything. I'm hoping, worse case, I end having to trim a little plastic or drop down to a 305/55 tire. The fender wells are so big on these trucks compared to other brands, anything in the 33 range just looks a little small in the front, so I'd rather trim a little plastic than drop down in tire size.