At least fot the 96 its a 6 and one half inch speaker.
4inch in front r-l grill easy installation but very shallow
6.5 inches
The rear speakers are the same size of the front. 6.75" but 6.5" will work also
The door speakers in Geo Prizms From 1993-1997 and possibly newer are 4in. and the rear speakers are 6.5in.
4
26R
don't know what size it is
13 inch
front of the engine
Can you swap a 93 Geo metro manual transmition with a 95 Geo Metro
6 3/4
155/80R13