I got the skid plates, was impressed with the thickness, strength and how they mounted, so I decided not to beef them up just yet. I couldn't figure out a way to gain much without adding points to get hung up on.
The gas tank one went on with no modifications, just four 7/16" grade 8 bolts. Grade 8 is overkill, but its what I had in short enough lengths.
The transfer case plate had to be modified to clear the bigger 4406 case. I had to grind about 1/2" off of one part because of a tab on the case. The rear edge also had to be bent downward. Also had to mount it a little bit lower, putting spacers between the frame and skid plate. I didn't have the factory hardware to mount this with, so I used the biggest bolt that would fit in the factory hole, witch was 5/16". Kind of a small bolt, IMO, but I guess it works. The drivers side was impossible to put nuts on the inside of the frame rails, so I welded small links of chain to the tops of the bolts to hold them, dropped them through the frame, then tightened the nuts on the bottom.
Still needs to be painted, didn't have any flat black on hand-
Inboard rear bolt for the gas tank plate, right next to the gas tank strap-
Outboard bolt, bottom side of the frame, inside the drivers side wheel well-
Front bolts-
Transfer Case Plate drivers side view-
Closer Up-
From the back looking forward-
Spaced it down with some bigger nuts for 7/16" bolt-