80's f150 bumper question

I'm inquiring about an F150 part i'm trying to find fo rmy E150...i'm looking for a bumper or the part of the bumper specifically...what i'm looking for exactly is a bumper that has brush guards on it or what appear from far to be "fangs" on the bumper...all the replacement bumpers I find on the net are all without these two guards on it, but I can find many pictures of 80's F150's with these guards on it! I'm fixing up my '84 E150 and want these on it...does anyone know where I can buy them new? or does anyone have them for sale?