Does the 98-02 WS6 Trans-Am have the same exact rear brake system as the Camaro and Firebird ?

Yes they do have the same brakes. but watch out 98-02 f-bodys have LS1 brakes that are identical 93-97 f-bodys have lt1 brakes. Hope this helps you.

The 98-02 F-body LS1 cars came with the bigger 12" rotors with the built in E-brakes and calipers on the rear are kind of like the ones on C5 vettes.