what is this called

4age, called, dose, pointing, silvertop, http://i11.photobucket.com/albums/a167/tranazn/694142805_5pnz9-xl-1.jpg, arrows, find, lifter

i am trying to find out that is this called and were can i get it its off a 4age 20v, it goes on top of the lifter the arrows are pointing at it also dose someone know what car comes with a 4age 20v or silvertop thank you http://i11.photobucket.com/albums/a167/tranazn/694142805_5Pnz9-XL-1.jpg