[Ironhorse]

It is my understanding that the hooks in the lower right corner of the picture listed as 73 - ? are the '73 thru '80 style GM hooks. I'm thinking in '81 GM changed to a differant style that mounts to the frame with the hook being at a horizontal position with the hooks facing each other and openings in an air dam to attach tow strap. Used from '81 thru '87 when trucks changed front clip, used also on the Suburbans up thru '91. Guess I need to pull mine off my '91 Burb and get a pic loaded in the computer.