This is a 1 groove crankshaft pulley which is correct for the year of 1965, 1966 and 1967 for 289  V8 Ford Mustangs and other Ford cars of the same vintage. It is correct for the HIPO 289 engine.  It is in nice condition.  For cars without Power steering and/or factory AC.    It is all original correct.   It is original Ford so it will fit and function just as Ford intended.  No import repro crap here!