Quote:
Originally Posted by 5851a
I wonder if back in the day the muffler was a restriction so the police manifold would give you 2 mufflers on the car. Police needed to be quiet. Seems like it would be a lot of engineering, must have made a bit of difference.
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Plus the Ford police package included the 255 cu. in. Mercury engine so maybe the factory engineers figured the stock Ford single exhaust was somewhat restrictive.