The "GM" on that plate is a customization.
My understanding about the radio plate to this date is as follows:
There was ALWAYS something in the radio opening;
If no radio option was ordered, then the "delete" plate was installed.
Since no second gen Firebird came standard with a radio, calling it a "delete plate" is actually wrong;
The radio wasn't deleted, it simply wasn't ordered.
The radio accommodation package is a curious matter;
My understanding is that all cars before a certain point in the second generation production run had the antenna in the windshield, and antenna lead installed - before GM wised up, and started building cars with no radio option without the antenna...
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1970 Formula 400
Carousel Red paint on Black standard interior
A no-engine, no-transmission, no-wheel option car.
Quite likely one of few '70 Muncie three speed Formula 400's left.
1991 Grand Am: 14.4 @ 93.7mph (DA corrected) (retired DD, stock appearing)
2009 Cobalt SS: 13.9 @ 103mph (current DD; makes something north of 300hp & 350ft/lbs)
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