According to a copy of the official "News from Pontiac" memo from 1977 that I possess, it states 1377 were produced. As far as I am concerned, that should be considered gospel since it came from the company in an official document.
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1976 LeMans B09 Freeway Enforcer, 455/M40 Smokey
1977 Trans Am, 400/M21 Black/Gold Bandit. 44K actual miles
2017 Sierra SLT 1500 Z71 4X4 
2019 Canyon SLT Crew 4X4 
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