One for the Porsche brake experts (KTL? Bill V?

)
These brakes are adapted to a 914 GT racecar. I haven't taken any measurements yet but they fit under 16" wheels. Previous owner referred to them as "big reds", but they are different than the 993 Turbo/RS brakes that are typically called big reds. They aren't 930 brakes either. Are they 944 Turbo brakes? 964? I need to replace the front rotors now and eventually pads. First 2 pictures are front, last one is rear.
Can anyone identify them? Or tell me what I need to check to verify?
Thanks!