Thank you Leigh Ping for Moving the Pic ,couldn't work out how to do it.
Have looked around the subframe couldn't find anything missing. Will try the rear bumper.
Serves me right for leaving it so long , but the list kept getting longer. :
M12 thread , 54 mm long requires a 17mm spanner and has factory blue thread lock.
The vehicle is a TF . Don't see anywhere under the boot latch where it might go , bumper is attached by studs with nuts. Thank you for all the suggestions. Is there any thing above the silencer heat shied as I have replaced this too.
Not thought of that one. It is pretty clean with no rust. I think I must of removed in error while stripping down the rear, as every thing I have refurbed or repaired seems complete. Just cant remember removing it.