should i bolt this on or just use the glue provided or is there stonger stuff available don't want this peelling itself off at excessive speed also if have to bolt it on is the roof lining easy to remove then refit
cheers

 

Is it a functional Scoop or cosmetic only ? If its functional I would bolt it on, if it's cosmetic I would throw it in the bin and not mark or drill the roof for something that does nothing.