All aeronose fenders are the same seeing as they all use the same headlight setup.79-86 are different they are shorter and require fender extensions. look at my cars pic. cause of the faded pain you can see the difference. as far as oem goes there was only two fenders put out.
[img=http://memimage.cardomain.com/member_images/9/web/2481000-2481999/2481419_3_full.jpg][/img]
iirc it's made into the bumper cover.
[img=
http://www.superstang.com/bizaro/tn_DSC00054.jpg][/img]
they look the same but I'm pretty sure they arent.