jeep transmissions, especially the nv3550, are notoriously noisy. noisy enough that people often think there is something wrong when there isn't. noisy flywheel to be exact.
2003 Rubicon, 4.0L, 5SPD, Custom 4.75" lift, 33" MT Baja Claws
1999 SE, 2.5L, 5SPD, sold it
PM me for wheeling in and around Northern Illinois