Cracked frame prevention

I'm new to the xj world and I've been hearing a lot about the frame cracking by the steering box with large tires right now I'm running a 4.5 inch lift with 32s I'm going to build a front bumper that ties into the frame rails what else can I do to stop the frame from cracking I'm a welder by trade so I can do custom fabrication

Fully plate the rails, bumper to bumper. Use home bult 3/16 angle, or store bought.

plate both sides, on top, and underneath of the steering box area. even with full set of HD offroad stiffeners, mine cracked underneath.

Yup, mine cracked under my front bumper plate. Like above, plate the whole area if you can. Kind of a PITA to do though.

Does anybody have any photos of what they did

When you plate everything, do away with the stock spacer piece too. I welded some small sections of tubing to space the box out. Like already said, plate everything possible.

Here is what I did. Steering box brace that basically makes the pitman arm double shear. Ties into both frame rails, in addition to the bumper X-member ahead of it and the trackbar brace behind it. It bolts on using the swaybar mounts and a bumper bolt on each side. The rails will get plated eventually.

I installed HD Offroad body stiffeners...got front and mid sections done in time for redbird

I have the c-rock inner steering box reinforcement that replaces the stock steering box spacer and sleeves the bolts.

Also my bumper mounts extend past the steering box on the outer side.
I am going to do the hd offroad front stiffeners as well on the outside, i have their mid stiffeners and am happy with them and will likely do the rears as well.

Even so when my still origional steering box goes out i will plate all the way around the steering box area just to be sure.

Reinforcing the track bar mount area is a good idea im told as well as going to a double shear mount.

I have frame standoffs from the mid stiffeners to my rocker replacements and some day my cage will tie all of that into the front and rear bumpers and rocker replacement. I expect to be very stiff and run my cherokee for a long time.