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Engine options remained virtually the same as in 1972, with the exception of the 351HO being dropped. The 351-4V was not advertised in the '73 Mustang as a Cobra Jet engine even though the 1973 Ford shop manual and other internal Ford documentation did reference the engine as the 351-4V CJ since the "Cobra Jet" nomenclature did continue on in Torino, Cougar, and Montego lines.