Chris is correct- that was a factory mod after Ford pulled out. The sump drops down, then moves forward about a foot for removal and the brake is in the way as is the crossmember. There's a decent illustration of the removable factory parts in the black factory illustrated parts manual, or you can easily make your current bracket removeable by welding an angle iron to it and screwing the angle to the frame so the assembly is horizontal and approx. level with the subframe.
The crossmember is more complicated to convert but is actually held in by the front lower a-arm attach nuts. I made one from scratch- it looked easier than modding the stock crossmember.