I have a 2" leveling kit right now with 35's. It rubs a little bit and I thought about getting a 3" lift kit on top of the leveling kit. Is that possible? Or should I just get a 6" lift?

 

There is no 3" lifts for your truck unless your either referring to a body lift, which will work but install is pricey, or stacking another leveling kit on there which won't work, you literally wouldn't even be able to bolt it all back together. You could however go with a 4" or 6" lift and be fine, but depending on what wheels your using, those may have to change.

 

The 3" kit is just another leveling kit. And you can't stack them, it is way too unsafe. Same principal as stacking rear blocks but worse. Either get a body lift or scrap the level kit and get a real suspension lift.

 

^ and ^ x5