1988 D150 question

My son just bought a 1988 D150 as his first truck. It is in need of a back glass. I don't have the truck here, it is 200 miles away at my parents farm, but the local junk yard has a 1973 Dodge Pick-up. Is the back glass the same? I know the doors are.
Thanks!
How many cracks are there on the frame where the steering box bolts up to it? They're notorious for that, so It needs to be inspected, very close. My first truck was a black 1988 D150. I miss that truck....