If the car is an '82, then it is not a 560, it must be a 500SEL.
The 560 came in the Second generation from 1986.
The 500SEL is awesome, but the 560 is even better. Very POWERFUL, and luxurious.
THe W126 chassis is probably one of the best from Mercedes. The cars require a lot of maintence but when properly kept, they are very reliable.
Really good to drive as well, because they are heavy cars, they drive very well and the faster you go, the better they feel.