Experiences with 150 PD and p-Box

I'm starting to think about buying a new car. That's why I'd like to hear about your experiences with the 150 TDI engine in the Golf/Bora. Since I drive a lot on the highway these days, I'm also considering equipping the car with a power box. My main goal is to increase power in the range above 160 km/h and increase the top speed. It definitely has to be a subscription, as I'll be returning the vehicle after 6 months anyway.

What is the RPM of a 150 horsepower engine with front-wheel drive or 4Motion at approximately 200 km/h?

For traction reasons, I would prefer the 4Motion version, but in the past, those models always had a noticeably shorter gear ratio.

What experiences do you have, if any, with the p-box when using it with a 150cc PD (presumably referring to a specific engine or vehicle)? What is the engine's default power output? With a p-box, it should have 180 horsepower and 370 Nm of torque?

http://www.pbox-motortuning.de/

Thank you in advance for the information...

... so, you can read about my contribution to the PBox above, in the section about the engine failure; I had it installed for a week!