You'd have to do a lot of trimming to clear a 35x12.50" tire on a 20x9" wheel with that little backspace. You would likely still rub on the back side of your front wheel well, even if you trim. If you're looking to run a 35x12.50" tire, your much better bet would be a complete 4" lift kit or adding fiberglass fenders to your truck. While the coilovers in this kit will throw off your truck's CV angles, as long as your at or below 3" of extra height, you should not experience issues with your CVs.