Photo Credit: GM<\/figcaption><\/figure>\nThe 2005 model year saw the introduction of the 400 HP 6.2-liter engine. It had even better performance (0 to 60 mph time of just 4.6 seconds). Sales started to decline and by 2006, the final model year, the GTO was being blamed for singlehandedly causing the downfall of Pontiac as a brand.<\/p>\n\n","protected":false},"excerpt":{"rendered":"
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