All-Original 1965 Ford Mustang Had Just One Owner, V8 Running Like New 11 May 2021, 6:03 UTC · by 6 photos The 170-ci (2.8-liter) was no longer available, as Ford decided to replace it with another six-cylinder unit, this time the 200-ci (3.3-liter) with over 120 horsepower. At the same time, the 260 (4.3-liter) V8 Windsor was dropped, allowing the Mustang to be offered with several versions of the 289 (4.7-liter), including 2-barrel, 4-barrel, and the Windsor HiPo. The 289 V8 2-barrel is also the engine powering the Mustang we have here and which, at first glance, is the closest we ca...