Picked up a w123 300cd for the right price ,l want total gas mileage power loss is fine
If anybody knows the optimum o.d gear ratio for the motor l wana know it.

I belieave you turn down the injector pump?

What do l need to convert it to turbo ? And whats the best overall turbo or sc to use?
A ford 95 tbird m-90's are dirt cheap