This highly optioned 1970 Ford Mustang 428 Cobra Jet convertible is powered by a date-code-correct 428 Cobra Jet engine, backed by a cast-iron tailshaft C6 transmission and date-code-correct N-case 3.00-gear ratio limited-slip rear end with 31-spline axles. Only 47 convertibles were built with the 428 Cobra Jet engine, and of those, only 14 ...