Well I finally got the radiator skid plate fabbed and installed. I had to hold off installing it until I renewed the vehicle registration. It seems that Abu Dhabi in it's fickle manner decided that modified vehicles are a bad thing. I had to put my old bumper back on to pass the inspection. Of course, it was banged up pretty bad from too many sand dune impacts. I almost failed again because the technician complained that "it looks not so good". I reminded him I had a perfectly fine steel bumper but they made me change it. Then they nearly made me take out the lift kit, but I convinced them that the bottom of the rear fender was still below the midpoint of the axle.
Anyway, about the skid plate. I drew it up, and a large local metal fabricator that has a multi-million dollar contract with our project fabbed and installed it for me. I specified 1/4" aluminum, but they used 4mm instead. I can't complain though, since they did it for free. I decided to give the skid plate a try. If it doesn't stand up to the task, I'll have then make a thicker one.
Thanks for your help James.