Finished the job, whoo hoo!!!
Here are my observations and tips:
1. If you don't have a lift and your driveshaft is more or less straight from the tranfer case to the diff, then it may be okay for your driveshaft to fit fairly tight. I had a BB and wasn't comfortable with the amount of play I had so I ground off 3/8" from the transfer output shaft and 3/8" from the yoke slip spline. I'm happy with the movement I have now. Tried it out off road and looks good so far.
2. Couldn't find a dust boot anywhere online. So I zip tied a bicycle inner tube on. Looks good so far.
3. Couldn't get my shift indicator lights to work right. Eventually found out that the shift switch was busted and swapped the switch from the 249 and it works fine.
For future reference, behind the VIC on '98 ZJ, you unplug the red plugs and plug together the black plugs.
Then all of your indicator lights will work except the "LO" light. OK, one light out of 10 ain't bad and I can live with it.
But the wheel lights work and all the rest works just when you shift into 4LO, all you get is "PARTTIME".