Welcome to C7 Corvette Z06 side vent spears! These will not fit Grand Sports! We were the one came up with this idea and design these spears for C7 Z06. Some other vendors bought ours, copied the design and even using our pictures! Please be aware that the copied version will not fit as well as our original version! Also, you need wrap material to install these spears and we are using 3M 1080 carbon flash as one of our colors.