There’s no such thing as a 1964 Mustang. All were titled as 1965 vehicles. Minor changes were made at the normal 1965 model year change over, which caused collectors to refer to the earlier models as 64 1/2. This I could forgive. But it could have been covered in the write-up with a bit of effort.
But there is no such thing as a 1970 Pinto. It was not introduced until the 1971 model year.
Article was obviously not written by a ‘car’ guy/gal.
From Wiki-
Since it was introduced four months before the normal start of the 1965 production year and manufactured alongside 1964 Ford Falcons and 1964 Mercury Comets, the earliest Mustangs are widely referred to as the “1964½” model by enthusiasts.[21] Nevertheless, all 1964½ cars were given 1965 U.S. standard VINs at the time of production, and – with limited exception to the earliest of promotional materials[22] – were marketed by Ford as 1965 models.[23] The low-end model hardtop used a “U-code” 170 cu in (2.8 L) straight-6 engine[24] borrowed from the Falcon, as well as a three-speed manual transmission and retailed for US$2,368 (equivalent to $22,344 in 2022)[10]. Standard equipment for the early 1965 Mustangs included black front seat belts, a glove box light, and a padded dash board.[25] Production began in March 1964 and Mustang Serial Number One (5F08F100001) was sold on April 14, 1964, at the George Parsons Ford dealership in St. John’s, Newfoundland, Canada.[26] Official introduction followed on April 17 at the 1964 World’s Fair. The V8 models were identified with a badge on the front fender that spelled out the engine’s cubic inch displacement (”260” or “289”) over a wide “V.” This emblem was identical to the one on the 1964 Fairlane.
Several changes to the Mustang occurred at the start of the “normal” 1965 model year in August 1964, about four months after its introduction. These cars are known as “late 65’s”. The engine lineup was changed, with a 200 cu in (3.3 L) “T-code” engine that produced 120 hp (89 kW; 122 PS). Production of the Fairlane’s “F-code” 260 cu in (4.3 L) engine ceased when the 1964 model year ended. It was replaced with a new 200 hp (150 kW) “C-code” 289 cu in (4.7 L) engine with a two-barrel carburetor as the base V8. An “A-code” 225 hp (168 kW; 228 PS) four-barrel carbureted version was next in line, followed by the unchanged 289 HiPo “K-code” equipped with a 4-barrel Autolite 4100 carburetor rated at 271 hp (202 kW; 275 PS) at 6000 rpm and 312 lb⋅ft (423 N⋅m) at 3400 rpm.[27] The DC electrical generator was replaced by a new AC alternator on all Fords (a way to distinguish a 1964 from a 1965 is to see if the alternator light on the dash says “GEN” or “ALT”).
Indeed!
No mention of the Boss 429.