Hi everyone, any body know what the best port of call is for replacement pistons/rings for this engine? Been to the dealers, they have been in contact with technical and say that neither the original pistons at 91mm or repair pistons at 91.5mm are available. I gave them the part nos which seemed to check out on EPC ok. Standard are HWA 104 030 0518 and oversize HWA 104 030 1618. I believe that they were manufactured by MAHLE although I could be wrong and I've tried emailing them but they don't seem to answer! Dealer suggest contacting AMG direct but technical dept thought they were circa £800 each when they were for sale! That's over 5k with the VAT! Any help will be much appreciated.