4" in the dash, and 5" in the rear deck if it's a sedan, or 5"x7" if it's a hatchback. Hope this helps.
Rear deck speakers are 6" or 6 1/2" and the door speakers are 4"
The door speakers in Geo Prizms From 1993-1997 and possibly newer are 4in. and the rear speakers are 6.5in.
Probably 10 gallons (I own a 1996 Prizm with a 10 gallon tank).
What size are the speakers in a 1992 standard cab Chevy S10?
Front (in dash) speakers are 4"
If you are referring to the stock size speakers they are 4x6 in all four positions
they are 6x9's.
Door and rear speakers are 4".
My 1997 e350 has 6x8
6.5" front and rear
The front speakers are 4.75" (yes, a non-standard size) and the rears are 7.0" (you guessed it, another non-standard size). 4.5" aftermarket speakers will fit the front with some additional foam baffling round them to make them air-tight and 5.25" and 6.5" speakers will fit the rear with a Scosche adapter bracket. I have 6.5 inch Pioneer speakers in back. I just screwed the new speakers in the stock mounts and it worked fine.
They are 5 1/4's