I've now routed some hose through from the valve up and backwards into the bike in a similar fashion to the original setup.
And cleaned and re-oiled the K&N filter: -
The only issue now is how to fix the thing to the bike. Someone posted before about doing something similar and making a bracket and there was a picture, but I'd be damned if I can find the post now!
__________________
Roast Beef Monster!
Termignoni and Bucci - Italian for pipe and slippers!
S4 Fogarty, S4R 07T, 748, Series 1 Mirage