Gez,
Is this it? Found on the US Adidas website
http://www.shopadidas.com/product/in...torsion+zx8000
They're US based but don't seem to ship to the rest of the world, but you might want to e-mail them and ask nicely.
Edit: OK they aren't quite the same. Looks like USDM Adidas = USDM Subaru