906 PORSCHE PARTS BOOK: https://pbase.com/9146gt/image/154075307

906 Magnesium Lower Valve Cover / Casting Part Number: 901.105.116.11 ~ 901-105-116-11 ~ 901 105 116 11 ~ 90110511611 See here https://pbase.com/9146gt/image/156939935

906 Magnesium Upper Valve Cover / Casting Part Number: 901.105.115.10 ~ 901-105-115-10 ~ 901 105 115 10 ~ 90110511510 See here https://pbase.com/image/167366919

I really need your help while finding a set of 906 Magnesium upper/lower valve covers, 6-bolt. My 906 engine is currently being build and we're hoping to be able to locate the correct set of valve covers. If by chance you have a set available for sale, please email me a AJSERRANO at MSN dot COM. Thank you!

Posted for help here http://www.early911sregistry.org/forums/showthread.php?38766-906-Carrera-6-911R-motors-characteristics&p=970908&viewfull=1#post970908