Convert w126 300SE ???

Hello, I bought myself a w126 the day before yesterday and are now facing the question what do I do with the car? It is from 3rd hand has 350tkm on it and is in blue blackmet. Code 199 has a good equipment and is maintained. Reselling? but most want to have given everything battles?? that would be worthwhile as good equipment and good technology or ready and put away or drive a new Mercedes fender I still have as well as a very good rear bumper and since my B Is there nothing in the way of a new varnish, but is it worth it?? Can you easily turn the engine to Euro 2, it is from 1989. or what would you do with it? Battles are too bad for me because these cars become less daily. Gruss Lars