Wondering if anyone could help. I want to put 35's on my LMM without putting a 6' lift on it. How much lift do I need? It is stock now and trimmed for 33's to fit. Body or suspension?

4" suspension and some not aggressively backspaced wheels and a bit of trimming.

6" and 4.5" of spacing works fine on mine, i think front bumper was cut a bit

You can crank it and make 35s fit but be ready to trim quite a bit. I would just get a lift kit and keep cv angles nice.

In my humble opinion, I think it can be done at stock ride height.......with the right, no let me rephrase that, the perfect backspacing. It's been done on the OBS trucks quite a bit. Things are a little tighter at the rear of the fender on the NBS, but you'll have more room to the bumper. 17" LMM wheels or H2's are about the perfect size wheel for clearing taller tires. They have ~18mm of POSITIVE offset.

If you're not afraid of cutting non visible and non structural metal, it can be done. What ever you do, DON'T rely on a torsion lift to clear them. The tire will still crash into the fender when ever you hit a bump with the wheel turned.