From Citroen SM Wiki

British owner of UK at first registration 1973 EFI model. In my possession since 2009, Merak tensioner, solid valves, revised chains and electronic ignition. Ceramic coated manifolds improves engine bay temperatures. Original tabac interior, replaced original headlining with wool cloth. Existing member of Facebook groups and other Citroen enthusiast groups. With the help of this great resource and the knowledgable contributors here I hope to continue my enjoyment of the greatest car ever built for many years to come.