They had that weird dash layout is the reason I'm guessing. They had the stereo's in one place and the tape players were over towards the right hand side of the dash. It was a goofy setup. I remember my dad buying his 89 back then and laughing at how the cassette player was off not built into the head unit.
I love that model, but I got a sweet spot for a black reg cab 5.3 lowered. But o well, fords are better!