What Is A Formula 'S' Package 'Year to Year'

My 1965 Formula S (verified with build sheet & fender tag) has no tachometer or wood grain steering wheel, it does have the Rallye stripe.

On your fender tag on the ABC line, a "2" under the "C" indicates Formula S package. If a "5", that indicates the Valiant/Barracuda performance package. The wood grain wheel was factory-optional and the Rallye stripes were a dealer-installed option per the factory literature I have.