What condition are your body mounts now. The winter salted roads where I live rust the body mounts and doing a simple body lift opens a whole new can of REEpairs. If you have a southern truck with rust free mounts your job is half done. 2” or 3” are most common. Buy lots of penetrating oil and start spraying it on days before you start the work. The lift is usually just blocks in the form of cylinders 2” or 3” long. 1 for every body mount. And some sort of steering shaft extension. Accompanied by an assortment of new hardware. Getting the old bolts out often destroys the bolt and/or mount so consider putting new mounts on as well as the lift blocks.
I have never found lift brackets for the bumpers and not raising them with the body just looks half done and just plain stupid. I have had good success fabricating my own
Many of the mounts on mine rusted thru and Ive had to remove and repair them and it was a huge deal. Worth it, but was way more work than a dozen bolts and some blocks. Sawsall cut most of my original mount hardware. But I see some southern trucks that look like you would even need penetrating oil.
Follow the directions and it’s an easy job.