2" RC level kit 275/60r20 Cooper Zeons's no rubbing or power loss issues at all.I'm pretty sure a 305/55r20 would fit theres lots of room compared to the 900ts
Just installed my RC 2" level kit with my son it took 90 mins from complete start to finish.Make sure both wheel are up as then the sway bar will not fight you.when we did the last side all we had to do was drop the strut bolts and there was enough room to slide in the spacer.side 2 took 22 mins.First side was just over an hour.Use a ratchet strap to pull upper arm onto ball joint.Truck looks a thousands times better.
Same seal here the image on my 11 duramax even though it was in the rear view mirror was like HD.The image in my new 14 is like low def a step backwards.