Ford introduced a new Mustang at the Detroit Auto Show this week, it seems like an ideal time to look back at Pony Cars of the past. Saddle up; it’s time to look back at the car that still captures the imagination of the world’s automotive enthusiasts. 1964-66 A “good-looking, compact youth automobile” with a 108-inch wheelbase, a 2,500-pound curb weight, and a $2,500 price tag was what Ford Division Chief Lee Iacocca was after. On April 17, 1964, the Mustang made its premiere as a coupe or convertible. The good: Ford sold 22,000 Mustangs on the first day. By 1966, it had sold a million. The b…