I Just bought a 1991 300ce in good shape and it was well maintained.

Ive read on this board that the 104 engine which I have is prone to Head gasket problems, bad evaporater ac valves, and wiring harness problems. My question is basic how can I prevent these problems from occuring?

The car is a beautiful machine I have some reserve funds saved up just in case But who wants to spend money on repairs after just buying a car.

I apreciate your input.