Why didn't Williams do this from the factory? Who knows but all I know is that the plain plastic molded radio 

looks like GARBAGE! This enhancement gives you all the die cut decals to convert your plain radio to something

that actually looks like a radio. You get two Speaker Grills, Complete AM/FM Radio Dial, You get REC PLAY FF REW STOP Function Functions for the cassette, you also also get Buttons for AM/FM AUX and TAPE

Finally you get a center 2 piece decal set that makes the center look like a functioning cassette deck.