I'm thinking of using a Garrett T04B 62-1 if I buy the complete turbo kit from this thread:
http://www.benzworld.org/forums/w124-e-ce-d-td-class/1270977-turboing-300-coupe.html
The performance target is 0-100km/h in <=5.0sec with stock 722.358 auto gearing and 3.07 rear ratio. How much power will I need to achieve this?