95 Cherokee rear discs (pics)

exactly. rear brakes. rotors, lines, bads shouldn't be a problem. But spash shield, mounting bracket, calipers will be.
How does the emergency brake work? Mechanical?

What else is needed for an 8 3/4 axle (bbp)?

http://image.fourwheeler.com/f/8999084/129_0606_04_z+1984_2001_jeep_cherokee_xj+disc_brakes_kit.jpg