930 brakes: what have I found?

[FreudeamFahren]

I came across these brakes, advertised locally to me. The seller doesn't know exactly what he's selling, and I'm not sure either. He states the following:
- rotors are 295 mm diameter
- rotors are 25 mm thick
- 75 mm distance between the mounting holes
- "hat height" (?) 80 mm

My questions are:
1- Of what origin is this setup?
2- Are the rotors with slots and holes likely to be OEM Porsche rotors?
3- Is this setup a straight swap for a '87 911 3.2?

[Bill Verburg]

Originally Posted by FreudeamFahren

I came across these brakes, advertised locally to me. The seller doesn't know exactly what he's selling, and I'm not sure either. He states the following:
- rotors are 295 mm diameter
- rotors are 25 mm thick
- 75 mm distance between the mounting holes
- "hat height" (?) 80 mm

My questions are:
1- Of what origin is this setup?
2- Are the rotors with slots and holes likely to be OEM Porsche rotors?
3- Is this setup a straight swap for a '87 911 3.2?

They are probably 964 fronts, not a straight swap onto anything but a 964, the rotors are not oems