. Options included a radio suppression package and a Fuel Pacer System. Many—if not all—of them had a body-color paint sales code of "999", meaning special order paint. Racing and competition D-Dart Dodge offered a performance version of the Dart GT in 1966. Known as the D-Dart for competitive use in NHRA's D/stock class, the 273 V8 was modified to produce . Most of the power came from a larger carburetor and a more radical camshaft. The bulletin sent to the dealers from Chrysler also mentions an rear axle with 4.89:1 final drive ratio. SCCA competition In 1966, the SCCA introduced the new Trans-American Sedan Championship that allowed competition among Dodge Darts, Plymouth Barracudas, Chevrolet Corvairs, Ford Mustangs, and other "production touring cars" with a maximum wheelbase of . The cars competed in two classes, over 2 liters and under 2 liters. Few modifications were allowed; bumpers, rear seats, and floor mats could be removed, mufflers could be replaced with straight pipes, and different wheels could be used so long as the stock rim diameter and width were maintained. Any engine component available over the dealer parts counter was sanctioned for use. Bob Tullius' race team, called "Group 44," used Dart 270 model coupes and GT coupes with 273-4bbl engines and were sponsored by Quaker State. The team won the 24-hour endurance race at Marlboro Motor Raceway in car No.4 driven by Tullius and Tony Adamowicz, who would also go on to win at Riverside International Raceway. Dodge pulled sponsorship of the Darts after one season. Super stock Although racers like Dick Landy and Don Garlits had modified Darts in the mid-1960s to run in the National Hot Rod Association - NHRA funny car class using the 426 Hemi, super stock class racing of the Dart was almost non-existent due to the small V-8s available. In 1968, Dodge contracted Hurst Performance to build a limited number of Darts powered by the RB big-block and Hemi-powered Darts to compete in the SS/B class as the LO23 "Hurst Hemi Dart". According to Chrysler staff engineer Larry Shepard, the majority of these Darts were Hemi powered, although a small pilot run of fifty 440-powered Darts were also built in 1968. "In 1969," said Shepard, "we built over 600 440-powered Darts-basically the same as the 383 GTS, except for the engine." Foreign markets Right-hand drive 1960, 1961, and 1962 Darts were exported to Commonwealth