I found out the hard way that you should go through all the ball joints, u joints etc... in general any replaceable suspension parts that you aren't adding with your lift. I would also slap in a new tranny mount if you do a tfer case drop. If the tranny mount is bad replace the motor mounts too. (Thanks XJTall podcast for this tip!) You may have heard it as well but I tend to forget the little things when planning the big things. HTH!