Porsche 996er saddles + RS2 adapter, which discs??

Hello, I have now got Porsche 996 saddles for the VA and a suitable adapter (S2) As far as so good, seems to fit, unfortunately the discs are too large (312mm). I think I need 300mm disks, is that right??? Is there any LK 5×100 disks with 300mm and can I get all this at all through the Tüv?? Does anyone have an idea how to get a cheap fit with the saddles (996) and Adapter(r)S2??? (suitable disks, still an adapter??) Alternative would be vohl a solution MovIt etc. but I only wanted to use this as the last option, maybe I can also get it cheaper, or one of you has already gained experience with it?! So again my stand is, saddles & adapters fit together and could also be mounted, only the discs of the TT are too large, so another solution has to come!