well luckily you know you get quality with either the cervinies or CS, but personally i might have to say CS.

 

do you know if you have to drill holes into the car if you buy the GT/CS or can u stick those on as well???? I also read that side scoops slow your car down??? and less mpg? (i just read that on another mustang forums)

 

i dont notice any loss of power or drag

 

i would drill them, it makes the scoops nice and tight against the car,and you wont be paranoid about them coming off.Just be sure you really, really want scoops on your car, cause there is no going back once you drill!I tried without drilling at first, and the top back corner wasnt flush against the body of the car, there was a gap, so I drilled using the templates, and now they are flush, perfect! Use the templates that come with the scoops, and you'll have them exactly where they should be.