Datsun Roadster Forum-311s.org

Here is the part # for the hose that goes from the control valve to the heater core. It is a Goodyear hose that is the correct "L" shape but will need to be cut to length. $15 at the local parts house. Goodyear 63806.
Mike
aka exit64

This is now on the car and is a very good fit. $6.97 from Rockauto plus shipping. Look at Ratsun.net under parts wanted section for the latest RA discount codes.