Manufacturer Rules for the Daytona 500 in 2003:

Speed Racer

aka "mach5driver"
All Chevrolets, Pontiacs, Dodges and Fords will have the same 1.5-inch nose "kickout," or the extension of the front air dam below the bumper. All four makes, which have to mount their bodies on the same reference point, will also use the identical rear spoiler package -- 6.25 inches high by 57 inches wide at a 55-degree angle. Also downsized fuel cells, about 13.5 gallons (down from the standard 22-gallon cell used everywhere else) will be used at Daytona.(NASCAR.com), assume they will go back to the 22 gallon tanks for the non-restrictor plate tracks, it is not clear.
 




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