I just added 3" Teraflex lift. I didn't need the transfer case drop but I have an LJ, you may or may not need it but clearly the provider must recommend it for the TJ. Your installer may say try it without first and add it if you have a driveline vibration. Seems eachTJ has a mind of its own here. I replaced the stock steering stabilizer but intend to eventually get 33" tires. You might be all right until you upgrade tires with your stock steering stabilizer. You won't need wheel spacers until you upgrade and go bigger on the tires if everything clears now. You won't need a motor lift as far as my research came back for 2.25-2.5" lift. I don't have one on 3" lift. You will need a rear track bar extension bracket to get the correct geometry in the rear axle. if you want the benefit you'll need rear swaybay extended links. You'll likely also want front sway bar links and I'd get the disconnects (that'll be around $117-$122 for teraflex or JKS) The installer will have to either redrill and reinstall your stock front track bar, or you'll need a adjustable front track bar to recenter the front axle (just like above for the rear). While you're at it You should get bumpstop extensions or new bumpstops. Finally, I added all four lower control arms and the rear upper control arms this helps set the correct caster and pinion angles on the axles. Do yor homework. If you are just fitting slightly bigger tires and don't offroad maybe you just need the boost.