car audio installation

[YOUNG K9]

anybody know about installing cd faces in a 1984 300 sd mercedes benz? some dood was talking bout the year and make of my car complicates the installion...somethin about it has a pre-amp or it doesn't and if it doesnt their going to charge more and I have to get new speakers too make it happen...anybody know anything about this shit?

 

[DAT NIGGA TAZZ]

go to cardomain.com and look up ur model car, itll tell what works and what dont