What are the size of my rear speakers. . . 1991 na just wondering. . . i'm lazy to go and measure my self. . . gonna pick some new one's up

 

6.5".

 

depends. it can be 6.5 or 4 inch....

 

the stock ones are 5, but most people put 6.5s, they go in easily.

 

The opening is actually 8 inches, but it's hard to find 8" speakers that aren't subs.

On the plus side though, that means you can get damn near any speaker made and get a audio shop to make a custom adapter to fit it, or you can get adapters online to make most 6.5 and 5.5 inchers work.

Although I have some Rockford Fosgate 6.5" speakers that won't work in TWO different adapters I've bought. I still have it in there...held on by one screw. I know I know, ghetto.

 

not as ghetto as mine, duct taped in there baby! but hey it works, unlike those adapters i've tried