The best all around setup for this (as to avoid water from rain or heavy off-roading to damage engine, as well as a great location for the filter to suck in cooler air.)
Buy the K&N drop in filter.
take out the bottom bucket from the air box.
take a hole saw and cut into any side of the bottom bucket.
then take a jigsaw and cut out the whole side, then do the same on the next side....continue doing this till all 4 walls of the bucket are cut out and all that is left are tha 4 corners (for support)
bolt the bottom bucket back into it's position on the fender.
drop in the K&N
close the top part of the air box back up
.....and ta-da, intake.
no monkeying around with the MAF or 02 sensors or anything....it's all stock.