OK IB and Bluewing,
Called Champion again. Tried the parts department this time rather than the tech support department which was my first contact point. I asked them about the rear axle assy, rotors, brake pads, and calipers.
The info they gave me is as follows:
Rear axle assy: Toyota (no other info)
Brake Pads: EBC (no part number or other info)
Calipers: Didn't know (Thought it may be a company called Brembo)
Rotors: Didn't know (Thought it may be a company called Brembo)
Must be my communicative skills. Maybe you guys could contact them and get specific part and model numbers for these items. If you are successful please post the info.