[10/10ths]

.....that you will be lifting luggage over that ducktail to place in the trunk. That's one of the reasons it isn't there from the factory.

Style is another.

Corvette just went through this on the new ZO6. They have a huge Gurney Flap on their "Stage III" ZO6 package and it make putting luggage in the trunk of the convertible very difficult. You better be a track hound if you order that option.

Remember that if you attach your ducktail to the top of the OEM spoiler, when it deploys at speed, you will be adding a bending force to the structure of the spoiler and that could cause problems.

Good luck.