My '69 GTO is an early Baltimore build and has spent it's entire life within 50 miles of the plant. I am second owner. Not sure but I may still have some original plugs with caulk around here and will look, if that helps.
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1969 GTO hard top ~ Std bore 400, '70-RA3 block, 670 heads, Bal. & Blue... M22, 12-bolt w/3:55s
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