My experience from big car shows doesn't lend to a post like that (#27) as the end-all.
It reads to me as though there may have been two codes used depending on build date;
As an example all the 1969 Camaro guys get hot & bothered over XT wheels, meanwhile that wasn't the only wheel used - just the more common 14x7" steel wheel code for that model/year.
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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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