Back in the 70's I had a '69 340 swinger that ran 12.8's with a Holley 800 spread bore DP, factory iron intake with spread bore adapter, 3,500 B&M convertor, headers, JC Whitney 500 lift/ 300 duration cam and 5.13 gears. The pic is the Swinger at Hawaii Raceway park (now closed).

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I love the smell of Deer guts in the morning, it smells like... VICTORY!