weld that plate on all sides?
Its originally made to bolt onto several already existing holes in the front of your unibody, then attach to an aftermarket bumper. But if you are going to use it as a frame repair, Id definitely weld it and also weld a plate across the front of your frame that would also weld to the side of this. The more support, the better. Without seeing it in person though, its hard to really determine how I would go about it.