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hey guys

i have a civic ex coupe. The car came stock with tweeters. I am thinking about getting a system for the car. I dont know if i shoukld get component or just the 6 1/2 speakers for the car. If i get the component, do i simply take the stock tweeters out and put the new tweeters inside the little grill? If so, how big is the the space or the stock tweeter size. If i just get the two 6 1/2, do i just simplky conncect the tweeters to the speaker?

thanks