I've done all the usual ebay, PistonHeads searches and after a few months all I have been able to buy the deflector etc less the clips.
Silverstone Porsche tell me that neither Porsche GB or AG have these parts, which I think might just be stretching it a bit
and perhaps someone would like me to buy the complete assembly from them 
Anyone got any ideas as to where I can get these new or used ?
I think that the two top clips are specific to the 987 and they are not interchangeable with the 986, not sure about the bottom one ?
Push comes to shove I suppose I could make the bottom one