Cheers lads... Just picked the wrong time to be messing.On a stint of nights & can't sleep with it being nice & warm.Just a tad tired & can't think straight.I realise now almost any 6mm bolt would do,provided its long enough.
Its a wrc spoiler with the thread already cut into the base of it.So whilst @ work tonight i'll make up some suitable threaded bar

& endeavour to "pop" in on over the weekend... hopefully !!