I am currently going through my car and replacing all audio equipment. I ran into a hiccup with the front dash mounted speakers. I dont know what size they are, I got 4 inch speakers and spent a good amount of money on them, is there a way to fabricate the dash to accept a bigger speaker? Or where can I find a place that sells a speaker that will fit?

I have a 1985 Chrysler 5th Avenue 318 750w amp 2 12" Pioneers in a sealed box

 

the search on google says they are 3.5" ceck at some of your loca audio shops they should be able to tell you if you can upgrade them.

 

Ive already tried 3.5s the magnet is way too big, i have a 4x10 coming tomorrow by UPS but I want the side speakers for a better sound quality.

 

they are 3.5 in speakers. It is a plastic dash under the metal overlay though so you could put in what you want. Not sure why you want to myself but I know people do this on a regular basis.