If you want your truck to flex and run those 46's at the same time , you are talking a lot of work. Say you lift it a total of 8-9" like I did mine. You would need serious hacking and probably even have to remove f/r inner fenders. My 42's hit both my inner fenders and my footwell area. There is no way I could run 44"ers + without more lift. Keep in mind, with 46's, you dont need that much flex. You just overwhelm obstacles with sheer size.