BHCC has an interesting 930 (twin turbo CIS)

[Pesch]

As per the description, matching number engine, but doesn't look very original...

https://www.beverlyhillscarclub.com/1985-porsche-930-c-8912.htm

Looking at the pictures, we can see:
original air box
original turbo inlet pipe
2nd scavenge pump driven from the distributor
2 intercoooler inlet
2 original waste gates
2 oil scavenge reservoir
It would be interesting to know more about this setup...

[quattrorunner]

So it’s cis, did you see the ignition? Interesting early idea for more power or at least better response.