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M5lp 1008 13 O Ford Mustang 46l Engine 1999
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1999: Wheezy first-generation Two-Valve heads and intake were dumped for Performance Improved replacements; GT horsepower rose to 260. Cobra Four-Valve horsepower was now 320. While the aftermarket was still timid with stuff that we used to take for granted, like heads and cams, superchargers were creating the effect of supplementary displacement for the little 4.6.
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