1980 has the distinction of having one-year-only square headlights and bezels. These lights and bezels aren't shared with any other year, and not all 1980 models got these lights. Given that all of the '73-'79 trucks have round headlights, that makes the square '80 lights fairly uncommon. So, let's see what you guys have got!
Here's mine. Originally a 6-cylinder/TH350. Currently a 305/TH350. Pretty bare bones with manual locks and windows, no A/C, 2WD shortbox. It does have AM/FM (no cassette) and carpet though.
I've heard a few people say that only the Silverados got square headlights in 1980. Not true: