Hey how many inches are the rear speakers and what size screws hold the covers on?

 

if i remember right, the speaker COVERS in the back are like 12"
the stock speakers were 4 or 5-1/2 but most people either mod their speaker plate, or make a new one to fit in other sizes

I just re-drilled the plates to make them fit a pair of 6"

 

speakers in the rear of a coupe are dependent on model and options. There is either an amplified 4" speakers or standard 6 inch speakers.

 

I have a 1986 GXL

 

6 and a 1/4 in back 4 's in dash. I just did it myself 2 weeks ago.

 

yeah my 6 1/2s fit in the back of my '88

 

When i got my new deck installed i asked what size my speakers were and i was told 5 1/4 all around.