Radio RPO codes on fender decal...

I'm trying to assemble a photo gallery of the radios that were available in the car.
Not sure if these are all correct, and of course I couldn't find some pics online.
Maybe you guys can help fill in the gaps.

I expect some of you still have the original factory radio.
UL1 AM/FM radio w/clock

UM6 ETR AM/FM cassette

UU6 ETR AM/FM cassette, equalizer

UX1 ETR AM/FM cassette, equalizer

UT4 ETR AM/FM cassette, equalizer with touch controls

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3.4L Supercharged 87 GT and Super Duty 4 Indy #163[This message has been edited by fierosound (edited 08-14-2021).]