in my 87 firebird i have 4X6 speakers in the front. i would like to put something a little bigger in mine and was wonder whats the best size and whats the best way to do it.

 

4x6 is really the largest that will fit in the factory locations. Unless you modify the dash and brackets extensively.

Many people will put 5.25" or 6.5" speakers in custom or Q-Forms kick panels, for improved sound.

 

You can fit 5.25" in the dash. Just cut( modify the factory metal housing and make sure the speaker is 1 7/8" deep or less.

You can also cut a hold in the speaker area of the dashpad and mount a 6.5" speaker from the top (the speaker will now sit on top of the dash pad). Just remember that your dash pad now has a permanent hole in it.

I personally run GBL GTO 4x6 in the dash of my 87 TA and they sound great.

 

yeah and the speakers on top of the dashpad look ghetto/whitetrash.

 

i had 4x6 kickers (the black and yellow ones not sure the model number) and they sounded great ive never had a better speaker than a kicker

 

i opted to go for some 6 1/2" components in the kick panels; night and day difference from the original 4x6's, but will cost a few more bucks to do.

as noted by others, you can get some 5 1/4s to work with a bit of creative modding (cutting)

 

I went with rerouting the front speaker wires to the door panels and installing 6 1/2" Pioneer TS-G671M "4" way to complement the 6x9 Pioneer TS-A6947 "2" way in the rear and could not be happier.

By ronusmcmma at 2010-10-02

 

I got components in my doors and they sound amazing. They are older model made in Germany Mb-quart's and I'm also running Mb-quarts in the sail panels and I have all of it hooked up to a Kenwood amp. It gets LOUD and is very clear. I have the tweeters up where the door switches would go.