what size speakers go in the front of a '89 coupe?

[Ender85]

I can't figure out what size round speakers to put in, 4" 5" 6" ??

[_Nomad_]

If it is the Blose system it has a 4" in the door stock. You can fit another 4" in there with no problem, you just won't get much sound from it. You can fit a 5.25" with perhaps some minor cutting on the diameter of the hole. You can fit a 6" to 6.5" in there but it will require cutting the hole larger and building a baffle to compensate for the mounting depth. This is all assuming you keep the Blose pod as an enclosure of course.

Also, you might want to run all new speaker wire in the doors and not use the Blose wiring, especially if you use a larger speaker.

Good luck. :seeya