What size factory speakers are in the back of an Ext. Cab?

Well, anyone?

i believe its a 6x8. should be able to fit a standard 6x9 though, not sure, havent tried it...

depends what year you have 87-91 it shouyld be a 4" newer than that should be a 5x7/6x8 a 6x9 would require a good bit of trimming metal and you will probably run into a depth problem so definately test before you cut

Great thanks, and Yes it is a 1992. Sorry bout that.

and you can cut the metal and house up to 6x9's.. use an air saw for the best results.

like i said about that, make sure you measure twice and cut once, 6x9 speakers are very deep with big magnets so i would hate to see you cut a big ass hole then the speakers dont fit

hahahahaha that would defenatly suck!

mine are exactly 6"

Just get better speakers / better placement for your front speakers. there is really no need for rear speakers in a properly set up and tuned system. (unless you are using the bigger speakers for bass, and not running a seperate subwoofer setup).

where would u say is the best place for front speakers?