ive just found in my garage a brand new set of speaker adapter plates for the rear doors of a vectra, they are autoleads sak- 3004.
http://caraudiosecurity.com/shop/product/products_id/2002.html
they are unused still in packaging with full instructions, the cardboard from the back is missing but thats it.
ill take £6 inc delivery if any one wants them.
drop me a pm if interested