Hello Starion1974,
The comment that you made, "If I buy it, I would want to make the car as original as possible" is really the key factor regarding this purchase. I think the car, at $24K, is overpriced. It needs too much work. It shows rust. You should price out original MB parts. Parts are priced through the stratosphere. If you are looking for a project, that's fine. My advice is try to find a rust free car that doesn't body work, and has all of its trim, chrome etc in great shape. You'll pay more at the start but you'll save tens of thousands in the long run. They make much easier, less stressful projects.
Best of luck.
Pagoda 69