OK, I know its marmite thing but I have a very unique (dare I say rare) original zender (alfa part number accessory) 2nd 'stradling' spoiler. It wraps around the rear window and fits to the c pillars. Also it has bit in the centre that rests on the window. When offered up it naturally falls into place. We are not sure how to fix it though. Looks like it may have been bolted through the c pillars but not sure if those holes in the spoiler are just for the manufacturing process. The Any ideas would be helpful.