33’s can fit without any lift, just some modifications to the splash guards and of course the melt mod. Obviously any type of lift will help clear them guaranteed and there are many options out there.
PRG has a mini lift kit using spacers, they also offer a much more extensive lift w/UCA’s and coilovers, 4x4Parts also has a few options. Rancho Quick Lift is another idea, or a leveling kit from Rough Country for a Frontier will fit up front, and add some airbags or lift springs or spacers or all 3 for the rear will also help lift that end.
All how deep your pockets are and what your goal is.
http://www.prgproducts.com/shop/category/pathfinder/
http://www.4x4parts.com/c-1048816-suspe ... inder.html