Sub-frame steel is as follows....
6 pieces of 1"x1" tubular steel, 1/16th inch thick walls.
2 pieces of 2"x2" steel angle, 3/16th inch thick.
Pieces of steel strap, 3/16th inch thick, used as internal stiffeners in between double cross member tubes, and at ends of tubes.
6 pieces of 4"x4" steel plate, 1/4" thick to attach rack to.
All fasteners either used Nylock nuts, or were threadlocked if bolt was going into a tapped hole. Bolts which were fastened to the actual roof had PVC gasket maker applied to threads and inside hole. PVC gasket maker was also applied to underside of ARB roof rack mount plates. Lock washers used where needed.
If you have questions, please feel free to ask. I took the vehicle for a test drive, and the Light Cage/Guard makes a bit of noise. Otherwise, there isn't really much difference in actual performance of the vehicle.
