Dash Speakers - Adapter Plate

[chipmunk]

I have read a number of posts on how to change the dash speakers and most seem to revolve around using the original speaker mount. There was one very comprehensive article by Andy Morris that discussed using a custom adapter from vfxbox however the link doesn't work anymore and a search on the internet has revealed nothing so I guess they are no longer around.

I would rather not destroy the original speakers unless I have to as they are still in good condition. Does anyone know whether the adapter plates that Andy spoke of are still available anywhere? Alternatively a way of installing new speakers without using the original speaker mount?