well..took it to one of my guy's and he quickly said it was a rear diff noise...so tonight i took apart my previous diff (replaced 30k ago) to just look at some possibilities...it definately sounds like a bearing...the only thing i dont understand is if it was the diff, wouldn't it change pitch with load?....anyways, i took everything apart, which was surprisingly easy,and looked at the side and pinion bearing and i'm thinking either:
a. bad side bearing
b. low fluid
c. pinion bearing
gonna check the fluid tomorrow....update then..
Not wanting to double post...here is some updates and more info on my problem...ANY help is appriciated!!