Ford Built the 429 Cobra Jet to Win Drag Races – This Alaska Buyer Ordered His With Power Windows and A/C Instead by Jack Harmon A rare 1971 Mustang Mach 1 surfaced in Fairbanks, Alaska, packing Ford’s thunderous 429 Cobra Jet, a factory 4-speed, and power windows — a combination almost nobody ordered. Here’s why this barn find has Mustang collectors paying attention.