Using 3 inch lift shocks on 4 inch lift

[Cwish]

When are upper controls needed. And 4.3xj I talked to superlift and they said 4 inch will work with the shocks so 4 inch it is but do I need upper controls and longer brake lines what do I need different from the 2.5 lift to 4 inch

[4.3LXJ]

You need a longer rear brake hose for sure. I think the YJ brake hose works. You need to relocate the attachment of the front hoses on the frame or get longer ones.

[Cwish]

Adjustable trac bar wouldn't hurt would it. What about drop pitman arm

[4.3LXJ]

You won't need a drop pitman arm. You should only use those if you have a dropped track bar mount to go with it.

[Cwish]

If I have 4 inches up front i want 4 inch lift leafs in the back right? Because in the 4 inch super lift kit it comes with 2.5 leafs and 4 inch coils