They do look better with a slight front lift to get things closer to level. Totally level is a bad idea, as any weight in the bed on on the tongue makes the truck squat in the back and looks funky. I had one in that body style and it wore 33x11.25" metric tires on 18" wheels with no rubbing and no front spacers. Doing it again, I'd get a small front spacer lift. Alignment is suggested afterwards.
