^^ crappiest answer ever.
If you tell soemone to search, jus say one word, its better cause you coulda told him with that much typing.
You most likely want a 4 inch superlift that you can find anywhere online. This is not cheap by the way, our trucks are expensive to lift(well, expensive for US, not for the company lol) and you're looking at 1400 for the lift and 300 for a new driveshaft you'll eventually need(they sell one).
It will look really good though. But seriously, a body lift is 150 dollars, and is a half inch to an inch shorter than a real suspension lift. I'd recommend a body lift and 33s.
The gap can be covered with gap guards that the companies sell.