The T5 is only behind the 2.5 iron duke and 2.8 v6. The NV3500 is behind the 4.3, and the Getrag is behind the 2.5 and 2.2.
Camaro rear ends are wider, however so are Nova, etc. The S-10 2wd rears are too narrow. I believe that you will need to relocate the spring perches on any rear.
82-88 units have mechanical speedometers, 89 to 2002 has electronic. I believe post 2002 is a ford pattern