the black guard on the cross member is to do with the radiator, its got somthing to do with the air :S doesnt do anything though....
mine doesnt have one. dont think they came on all models, or they might have been removed at some stage in there life...
if your really that bothered you could fit a bumper support/impact bar from a facelift...there a staright swap. they just bolt off. all you have todo is get the blocks, and support bar.