Hi Bryon,
From your photos I assume you have car 2627 so that would be Wilwood brakes and rotors, and yes they are that price from usual sources. Early cars had Ford parts, Granada rotors etc but not late cars. All of that data is archived at SCOF and as far as I can tell no new rotor cross referenced part numbers are currently listed. You might ask over at SCOF maybe someone there knows of updated info. Have your rotors failed? Great looking SPF
in your photos!