Oh.... you need the SYE, CV shaft, Adj rear uppers ( I recommend lowers as well ), rear CV track bar bracket and/or adjustable rear track bar.
Look at a TT and what it does to your driveline angles.... moving the t-case up 2-4" is just like adding a suspension lift of the same height. You need to accommodate the change with components to correct and adjust everything when complete.
If you have no mods like these.... you are looking at well over $1000 to do it right....
there are many posts on TT's.... do a quick search.....
Here is cut and paste from the above thread....
There is a lot of info out there for 'what is required' when installing a TT.... For the record, I will list it.
High Clearance skid ( of course)
Minimum of 1" BL for tub clearance
1" MML ( Motor Mount Lift)
Adjustable Rear Upper and Lower Control Arms ( I recommend both )
SYE ( recommended if you run over 3-3.5" of lift )
Rear CV style Drive-shaft ( required with SYE )
Rear shock re-locators
Adjustable rear track bar and/or angled track bar bracket to allow pinion rotation
and 'possibly' a Novak shift cable for t-case... ( not sure yet )
There may be some mods involved with exahaust.. guess I will find out
All in all... you are looking at about $1200-$1500 for a complete install if you are starting from scratch.