Just an FYI the handles can be swapped...
Of course. The 2 80's that I have owned both had the buttons. The truck that I have now had a broken vent window when I got it. I found an 80 at the salvage yard that had the button as well.
All 3 of these trucks had the square headlight, I'm wondering if it was part of that package.
There is another 80 in town, next time I see it, I'll check it as well.
I'm fairly certain this is factory. The 80 was an oddball in several ways. That's why I like them.....they fit me