Guys---found an answer to my problem----it was my exact problem---thought I would share it with others with the same noise:

www.stu-offroad.com/axle/driveshaft/driveshaft-5.htm
<img src="/forums/images/graemlins/lol.gif" alt="" />


1997 Wrangler TJ 5 speed, 2.5 L. Mostly stock except for 31x10.50's on Black Rockcrawler Rims.
1998 Wrangler TJ 5speed, 4.0L. Rusty's 3.5 " lift,33"BFG,4.10 gears,Novak transfer case shifter