I feel slight vibration at the steering wheel, most is felt in the seat.

I did not say this in my first post but the exast pipe has broken two times where it is welded into the muffler, yes the vibration is this bad.

I am very concerned the vibration is the result of the slop I found at the transfer case out put shaft, where the rear drive shaft goes into the transfer case. If anyone has any experience with this I would like to hear from them about replacing the bearing procedure. It looks like I may be able to remove the drive shaft, take the cover off the transfer case and then replace the bearing. Experience, suggestions ideas?

Don