As bgkast said, keep the car stock. There are getting to be fewer and fewer of these classics around the way it is. Not a fan of WVO conversions either. I would think that it would not be healthy for any engine in the long run. Just my opinion.

To be honest, if you want more power, pass on this car and get nothing older than the W123 series. These cars are not fast and were never meant to be. Adding a turbo to a motor that was never intended or designed to have one is asking for trouble.