I purchased this about 6 months ago but i can say i never used it.
once i tried to see if it is working and then left it in the trunk.
here cops let people go (%80) if you show the plate and put it on the front right away so thats why i purchased and never used it.
it fits on my e93 m3 and most possiblly it will fit on e92s but pls make sure with the manufacturer first.
here is the link below:
i dont have instructions.
price is $115 shipped.