In the original 427 SO, were the aluminum heads painted the same color as the block, or were they left unpainted? Same question for the coolant overflow tank. Was it left unpainted or was it painted black, as I have seen so many done?
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"The 427 Cobra is easily the highest performance car ever sold for street use. A decent 427 - not the worst, not the best, will go from zero to 100 mph and back down again to zero in less than 14 seconds. All thing considered, you can put together a pretty good argument that the 427 Cobra is the ultimate performance car, judged on any basis you want to name." Taken from; Corvette, The Sensuous American