Exhaust Port Divider for all 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972 and 1973 Mustangs with 6-Cylinder Engines.Smooths out air flow between #3 and #4 exhaust ports. Can be used with standard exhaust manifold and headers. Produces up to a 10% gain in horsepower.
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I have a question for the exhaust port divider on a 200 or 250 cubic inch engine. Is this a drop in piece or does it need to be fastened in in some way (weld)?
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