I mounted the DSBC spec R inside the ventilation opening on the left of the steering wheel. This is where two other Dutch Volvo 850 club members mounted their DSBC's so why re-invent the wheel.
The dual solenoid valve(1) is different from the Spec S valve because this type uses two valves and doesn't have a connection for the bleed hose, the blue coded hose leading back to the inlet just after the MAF so I had to block the connection on the intake hose. On the picture there are three blue hoses visible near the wastegate actuator(2). One comes from the turbo to the valve, one from the valve to the wastegate actuator and the third hose is used for the recirculation valve situated on the compressor side of the turbo and goes to the inlet manifold for the vacuum connection.