OK, so my thoughts are this ( I will be doing similar on the Ex that I am fixing up, thanks to Red85 for the donor vehicle). Reinforced plate from the brush bar/custom bumper to the cross member that 'sort of' protects the front axle and oil pan. Then from there reinforce plate down to just in front of the axle. It doesn't create a straight and flat piece but has a slight bend in it. I will have to fab up some brackets and crossbracing (angled steel) to mount the plates and give it some rigidity. It'll take some grinding, welding, and cursing to get it to all fit and look right.
I won't be able to build mine on until after the 6" suspension lift goes on since that will move where the front axle sits.
Not sure if that really helps but if you look from the front end you'll see the first crossmember I was talking about.