I have a 99 xj and Im going to put in a RE 3.5 super ride lift with rear springs and a 2 inch skyjacker coil and shackle lift, with 33 inch tires and a sye and differential. What else do i need? Do i need to do anything to the gears? THis is my daily driver and probably won't be wheelin to much.

 

Why not just go RE 4.5 and get the bigger RE shackles and a coil spacer with it?
It still might ride pretty rough seeing as how your control arms are going to be pretty steep.

You should probably regear to 4.10 if you have a manual tranny or 4.56 if you have an auto.

 

Differential? Do you mean a new axle?

Extended length brake lines.
Swaybar disconnects.
Adjustable trackbar.

4.10 if you have a manual
4.56 if you have an auto.

 

If he is going to be running 33's on a 3.5, I would think some trimming and bumpstops might be in order as well

 

Yes.

 

What happens if I don't regear? Im trying to do this on a budget but im thinking just the RE 3.5. Whats the biggest tire size i can go without regearing? by the way i have an auto tranny.