Hey all....just recently i've noticed that my 04 LE (bought new) is very loud when hitting rough roads...i sounds like the truck is going to fall apart....my buddies toyota 4runner with 110K is tight and no rattles/sqeaks/noises.....is it that the cargo area is so large that it acts like a cave and the noise just bounces around ?? its driving me nuts

The '04 is notorious for noises and rattles.

There is 7 pages of TSB for the 04, you pick and choose.
http://www.nissanhelp.com/Bulletins/Armada/2004/1.htm