R 107, some questions to buy

Hello, my dad is going to retire soon and wants to buy another oldie. This one should be: http://suchen.mobile.de/…/183060207.html?… Unfortunately, I find on the net not so much specific to the R107 and if, I get with the model changes and so on not quite clear. What do you think of the linked car? What is special about the year of construction? How good is the 350 engine? Does someone know the company that sells the car? Which wheels are original on it? Is there in B ezug on AMG package all original? In the first conversation the following information was given: – KM not comprehensible, approx.100000 estimated, – Hostorie with gaps – vehicle was sometimes green – two coin-sized rust spots – seats sat through – stand 15 years in barn – all around good maintained condition – new roof Thank you very much 🙂