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Ford Mustang first generation · 1964½–1973
Colors and paint codes
Ford Mustang · 1969–1970
Built in 1969 and 1970 to qualify Ford's semi-hemispherical 429 for NASCAR: a fastback with a huge scoop, a trunk-mounted battery and a hand-modified engine bay.
The Boss 429 existed to homologate Ford's new semi-hemispherical 429 for NASCAR. The rules required at least 500 cars with the engine sold to the public.1one source
Its only reason for reaching production was the engine, and it lasted two model years, 1969 and 1970.12
Kar Kraft, Ford's specialty shop, modified the cars and the engines.1one source
A very large hood scoop that works, with a ram-air door the driver controls.13
To ease the weight on the nose, the battery sits in the trunk.14
A KK sticker inside the driver's door, above the warranty plate, gives the car's Kar Kraft production number.6one source
How many Boss 429s were built each model year.
The letter is the engine code in the VIN.
Every conflict behind the figures on this page. All rulings.
Open
Our ruling: Unresolved: 857 or 859. Wikipedia, Over-Drive and Car Memories give 859. MustangSpecs prints 857, although its own 1970 page puts the 1969 cars at KK 1201 to 2059, which is 859 numbers by our count. Car Memories adds a line about two Boss Cougars without saying whether they are inside the 859. Maine Mustang's 869 matches no other source, and Wikipedia's 1,359 for both years is one more than 859 + 499.
Settled
Our ruling: We use a 2-barrel for the H-code and 375 hp for the Boss 429. Wikipedia's 1969–70 table does not cite CJ Pony Parts, so the two agree independently. Maine Mustang's own 1970 list has 375 hp too.
Settled
Our ruling: 198,239 with the Boss 302 and Boss 429, 190,727 without them; the difference is exactly the 7,512 Boss cars. Wikipedia's 191,239 matches neither.
