I continue to marvel at the level of change from one model year to the next.
If you look at '54 vs '55 vs '56 vs '57 vs '58 and then on to your chart: Major sheetmetal (and sometimes architectural) changes EVERY YEAR.
Now it takes us 5 years just to change the grille design.
K
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'63 LeMans Convertible
'63 Grand Prix
'65 GTO - original, unrestored, Dad was original owner, 5000 mile Royal Pontiac factory racer
'74 Chevelle - original owner, 9.56 @ 139 mph best
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