[Kerry 1989]

I am doing the system in my '89 GT pretty soon and I'd like to know the size of every speaker.
The ones in the dash,Door panels, and back seat pillars.
Thanks.

[1990gtguy]

i know for sure they are 6x9 in the back im pretty sure there 6.5 speakers in the doors and 3.5 in the dash

[Kerry 1989]

Originally Posted by 1990gtguy

i know for sure they are 6x9 in the back im pretty sure there 6.5 speakers in the doors and 3.5 in the dash

Thanks, Mate!

Edit:
Pioneer's website has a neat feature to see what sizes are everything.
You were off by a little bit on each.

[DROPTOP STANG]

they are actually 6x8 or 5x7 in the back. 6x9 will fit with minor fabrication

[1990gtguy]

6x9 fit in my 88 with no problem

[jrandis04]

Crutchfield also has a thing to tell you what sizes to use