1989-1994 should fit.
Remove the rear speaker covers in your 1994 Chevy Cavalier. Remove the rear speaker retaining screws. Remove the wiring harness from the back of the rear speakers.
yes, with custom enclosures.
3.5 inch
3-1/2"
yes
Yes
6x9 don't fit I'm stuck 2
if both cars are coupes or both cars are sedans then yes it will fit
no
absolutely NOT the s10 is rwd for christ sake
yes it will just need the brackets and clips to hold it on considering the kit is from the same years from 1988 to 1994. the 4 door the sides would have to be altered