Montoya at Homestead ?

As with most successful racers, Yunick was a master of the gray area straddling the rules. Perhaps his most famous exploit was his #13 1966 Chevrolet Chevelle, driven by Curtis Turner. The car was so much faster than the competition during testing that they were certain that cheating was involved; some sort of aerodynamic enhancement was strongly suspected, but the car's profile seemed to be entirely stock, as the rules required. It was eventually discovered that what Yunick had built was an exact 7/8 scale replica of the production car. Since then, NASCAR has required roofs, hoods, and trunks of cars to fit actual templates with the exact profile cut out of them.

Another Yunick innovation was getting around the regulations specifying a maximum size for the fuel tank, by using eleven foot coils of 2-inch diameter tubing for the fuel line to add about 5 gallons to the car's fuel capacity. Once, NASCAR officials came up with a list of nine items for Yunick to fix before the car would be allowed on the track. The suspicious NASCAR officials had removed the tank for inspection. Yunick started the car with no gas tank and said "Better make it ten", and drove it back to the pits. He used a basketball in the fuel tank which could be inflated when the car's fuel capacity was checked and deflated for the race.

Yunick also used such innovations as offset chassis, raised floors, roof spoilers, nitrous oxide injection, and other modifications often within the letter of the rule-book, if not the spirit. "All those other guys were cheatin' 10 times worse than us," Yunick wrote in his autobiography, "so it was just self-defense." Yunick's success was also due to his expertise in the aerodynamics of racing cars.

Yunick also built a 1968 Camaro for Trans Am racing. Although Yunick set several speed and endurance records with the car at Bonneville, with both a 302 cubic inch and a 396 cubic inch engine, it never won a race while Yunick owned it. It was later sold to Don Yenko, who did win several races. In typical Yunick fashion, the car, although superficially a stock appearing Camaro, had acid-dipped body panels and thinner glass to reduce weight, the front end of the body tilted downwards and the windshield laid back for aerodynamics, all four fenders widened, the front subframe Z'ed and the floorpan moved up to lower the car, and many other details. The driprails were even brought closer to the body for a tiny aerodynamic improvement. A connector to the engine oil system was extended into the car's interior, to allow the driver to add oil from a pressurized hose during pit stops; in order to allow the driver enough freedom of movement, the shoulder harness was modified to include a cable-ratchet mechanism from a military helicopter. The car was purchased and restored in 1993 by Vic Edelbrock, Jr..

All I can add is... Genius... Pure Genius!!!