That's a 1978 Concord. The 1980 Eagles and Concords both had the same bumper, but by then they had gone to the rubber end caps divorced from the fender. In 1981 is when Eagles started with the intergrated end caps, but Concords kept the rubber end caps. The all metal bumper will be hard to find. The rubber end caps type is pretty easy to find, since there are alot of rotted Spirits and '80 Eagles floating around ready to be parted. I think they would look especially nice painted black to match the end caps or with the end caps painted to match the fender.
On my Spirit I hated the divorced bumper. It looks terrible and alot of Spirit owners remove their bumper altogether. I fixed it by taking the rubber bumpers off, precisely cutting an inch or so off both ends, and then putting the rubber bumpers back. I also used Eagle bumper mounts, which bring the bumper at least an inch closer to the body. It makes a huge impact visually, and is commonly called a "bumper tuck."