Reinforced wall studs attaching an extra 2X4 on each side of studs, using construction adhesive and 3" screws, so 3 of these "base" cabinets could be hung on wall, flush w/ ceiling.  Used 8 lag screws per cabinet and will limit weight loaded into each cabinet to a max of about 80 lbs, so not worried at all about cabinets pulling off wall.  Given this background for our application, the cabinets are up, being used and look beautiful (white w/ pewter-colored doors).  We used a post jack to lift the cabinets into place, flush w/ the ceiling and put a bead of caulking all around their top edges at the ceiling, as we'd done previously w/ 3 of the "bold" series wall cabinets.  Planning to buy at least three more, to have on rollers on the floor of the basement work area.