996.2 GT3 OEM Rear Dampers - Help!

[Hoolio]

I need to replace the rear dampers on my 996.2 GT3. I've just taken a look and there are no markings on the dampers so I don't know which ones they are - apart for Bilstein. Can anyone tell me the part number or version of Bilstein dampers are OEM.

Thanks

[Hoolio]

Thanks. Will send them to Bilsten. Much easier bill to swallow than £555 + VAT Porsche wanted.