That's a performace accesories kit. They are pretty much the standard.. I know on the 87-91 you have to extend the shifter linkage.. Which they provide the piece of metal that needs to be welded in with the kit. Nothing really needs to be "done" to the steering..
The also leave you to modify your own radiator fan shroud..
We have the 3" kit on our bronco and our neighbor bought the same one and will be putting it on it soon..
I have that body lift kit. I don't know of any bumper brackets that are available to bring the bumpers up. We had to finagle mine to work. We welded on a medal peice for the linkage on the transmission..
Some advice though,
Don't be dumbasses like we were and decide to pour a concrete slab for a shed using a manual mixer on the same day of the lift install.. :banghead