

The link I posted, showed it as going from 1974 to 1991. Don't know that its accurate though.
Try www.TruckandCarShop.com Part# 73-34242 $119 N.O.S. Page 41
I should have one upstairs I could hook you up with.. actually, I should have 2... they wont be NOS, but should be decent looking... let me know and I'll go peak in the attic..
It is called a bed sill plate and you can get them from Classic parts. Here's the link for you. http://www.classicparts.com/1973-91-Bed-Floor-Sill-Plate-Blazer-Rear/productinfo/16-414/
Try www.TruckandCarShop.com Part# 73-34242 $119 N.O.S. Page 41
