Pro's and Con's on the 1970 mercedes ??

Looking for some pro's and con's on a 1971 mercedes.. I have an opportunity to buy one that has only 85K miles on it.. I do not specificly no the model, but i do no that it is a 6 cylinder and its gas.. I'm figuring that it is an E or C model ?? Any info will help in my decision of purchasing the car.. Of course I do know that the parts are expensive as this won't be my first Benz.. :+) :smokin: