Factory Speaker Questions?

[Boostisgood]

What are the sizes of the factory speakers in my 87 GN. I am replacing them with new speakers and i need to know what size they are and any other information that i might need to know. Thanks.

 

[TURBOV6]

3.5's in the dash
shallow 5.25 in the doors
4x10's in the rear, but will get greater results with a 6x9 with an adapter.