Very slippery shape compared to 68,69,70. Lessons learned from charger 500, Daytona, and Superbird. The 71, 72, 73 went through the air pretty darn good considering no 18“ nose cone up front to slice through air and less lift in back not requiring large spoiler, but it lost that classic flying buttresses that according to Richard Sias, And Bill Mitchell designers looked so right, making it look like a cock pit on top of car with the dual sharp C pillar flying buttress pulled back from the roof Line, then pinching down and back in to deck lid area, but that very look is what caused dirty air so to speak, causing drag and lift. along with recessed grill that looked awesome but also caused considerable drag. It just didn’t cut through the air well.