Im running the 2 + 2 RL sst lift, 1.5" spacer on stock 18s with 285/75r18 duratracs. Just put on. I have full clearance and no rub on anything but mud guard at +90% turn in reverse.
The truck has imo an amazing stance now and nearly perfect height without going to a big lift.
Itll have to do for me for now, but maybe around 160-200kms, Ill upgrade to the 4 inch big lift and throw some nicer 20s on her.
Ive trimmed the mud guards as much as I want for these almost 35s. No rub on RL uca at all, not even close.