21. 1967 Ford Mustang Shelby GT 500
Even though Mustang had some performance versions like the GT with a 289 HiPo V8 engine or the Shelby GT 350 in 1965, the first true performance Mustang with a big-block engine and respectable 0 to 60 mph acceleration times was the 1967 Shelby GT 500. Bigger and more powerful than before, the 1967 GT 500 featured a new design, a modified front and rear end, and a big 427 V8 engine with 335 HP and 420 lb-ft of torque.
In those days, Ford was notorious for underrating the power output of their engines and 335 HP sounded too little for a big 427. Mustang enthusiasts claim the real power was closer to the 400 HP mark, and the performance figures backed that claim. The 0 to 60 mph time was 6.5 seconds, fast for the day. Thanks to Ford’s suspension modifications, the GT 500 could handle curves well too.