this may help anyone looking for a particular brake disc by specs not application.
rally design have a 'thing' on their website Professional Motorsport Parts, Spares & Rally Equipment from Rally Design that lists discs by specs. so measure your discs and put the details in (along with the required pcd) and see what options you have. it's entirely possible that there's a disc the exact spec you need on a production car.
go to their homepage (see above link), click on 'show products' then click on 'braking' then 'brake discs, maxtorq' then above the list of manufacturers there's boxes to fill in with your dimensions. that will give you your options.
hope this helps, neil.