I didn't like the fuel rail as it was, I also had some specific space issues at the rear end. This area has an engine loom plug, the plenum vacuum outlet and the end of the fuel rail - its really not practical to have the fuel pressure regulator here too:
I moved the OEM fuel pressure regulator to the front of the engine:
Then modified the original return pipe, shortened it and left enough to attach the high pressure fuel line to:
This is the result - I hope its a neater arrangement:
The plenum is only temporarily in place to align everything & let me see how much space there is.