I have a few iteams from the old stereo in my Z that i have sitting around and have no use for anymore. The tweeters were in the Z with the old stereo and worked great, just upgraded to components with their own tweeters. The Kenwoods i have, i bought new at Best Buy, (still have reciept for $70) i just changed my mind after i bought them and never got to use them in the car. Any questions just send me an email aaw151@psu.edu