This is the location of all the breathers on a Jeep Wrangler X 02 Manual. It's a nv3550 transmission. Very easy job to prevent water from getting into your fluids. Very important if you are crossing water that goes above your diffs because the cooling of the hot diffs will cause it to pull water into the diff.
Long metal rod
Wire brush (if breathers are dirty)
Fuel line (I used 5/16 and 1/2)
Something to cut hose with
Goggles (highly suggested)