Main question then is.. how to secure the spoiler without the rivbolts, or similar. Or do I need to ge the proper fittings installed ? If I can use an alternative, what are folks using ? Sikaflex, Tigerseal, more big self tappers, bolts and washers etc..
All advice gratefully recieved

BTW. there doesn't appear to be a WiKi aricle on this, that I could find with a search term of 'front spoiler' or 'chin spoiler' anyhow. Maybe I should summarise responses and create something ?
boomshaka.