Yes. Recommendation is to uprate the transmission if you're fitting a 2.5 200 TDi engine. The reason is quite simple, you've got a lot of torque at the low rpms, unlike the V8 that has it much higher up in the rev range. So you hit the peak torque a lot more on the TDi than the V8, and that's why the ones with V8s last so much longer before something breaks.
The 2.5 N/A is more than good enough for a Series, and the 2.5 TD will make it really go like a rocket.
