Ok I bought those 06' Rubicon springs and rear track bar bracket for $70 and now it's time to install them.
I already have the RE 2" BB and I am hoping for close to a 1" lift with these springs (they have about 10,000 mi on them).
So will I need the rear trac bracket? I bought it so I want to put it on as long as it wont mess anything up.
Also I'm thinking I will have to do a TC Drop and should I buy a kit or do the whole New longer bolts and washer thing? I saw the write up on 4x4xplor. 
The coils will be a direct swap. To determine how much lift, measure your coil height before you remove them. Then when you have the Rubi's in, do the same measurment. You should receive 1-1.5+" lift. So along with your 2" bb spacer lift, you may have to lower the tcase to minimize the vibes. Another option but may not eliminate the vibes, is to install adjustable control arms in both rear control arms (upper/lower) locations. If not both, then the top for sure. You can then adjust the pinion towards the rear output of the tcase. All this may eliminate the vibes, but it all about the condition and balance of the shaft and joints. You could also look at a 1" body lift and motor mount lift as well to 'tilt' the tcase output towards the pinion.
If you go with a mml, look at rubber mounts and not the polys. I've got polys for motor and trans mounts. There is lots of vibes transducing through the frame to the body mounts (also poly) to the floor.
What do you mean by track bar bracket?
When you lifted with the spacers, you pulled the axles to one side based on the rigid length of the track bar. The front axle should be closer to the driver's frame rail than the passenger's. Opposite for the rear axle (closer to the passenger side than the driver's.) Some spacer lift kits will give you a bracket that you add to the rear axle stock bracket to 'recenter' the axle under the frame as the result from the lift. The front, they would recommend redrilling the axle mount, but I wouldn't. I would spend a little more money for a adjustable track bar. The stock front track bar has a tie rod end on it and they will wear out.
Once all this is put together, you may be adding some rear shock brackets that extend the shock further off the axle. During articulation, the shock may come in contact with the coil mount on the axle. The bracket pushes the shock back farther thus providing clearance. I would also strongly suggest you look at adjustable and articulating control arms and track bars to complete the lift. Its not really necessary, but you will benefit from the articulaton of the axles with them. The stock control arms are pressed and venerable to fatigue and cracking. To add, the stock rubber bushings will get really soft and deform enough to make your handling not that great.
Post pics of the measurement and progress of the install.
