1998 Volvo C70 Front Speakers ?

[VolvoTR]

Hello, there is a problem with the door speakers of my 1998 model C70 coupe car and I need to change, my first question is how can I remove the midrange speakers on the door face? ( they are not screwed ), my second question is what is the installation depth of the bass speakers?(the current speakers are 8\' dynaudio mounting depth is 7.5cm ) Thank you in advance.