Cheers guys for usefull posts (been away few days) soz for not thanking sooner, Not sure which way to go yet, Looked at area that you could bond and not the biggest bit worried that 1st time take down motorway could see spoiler embedded in cars behind grill/screen, best option for me would be to pick up s3 tailgate and glass complete as muppet who owned before me had bike rack fitted (badly) couple of chips to paintwork, just dont get too many s3's broken in area, might be worth getting quote from glass company to see how much rear screen costs (if will fit in a3 tailgate.)