Update: Currently I am working on a historic US car, which enabled me to test differences between 1930s European and American models. The American mod felt faster, because it has much more torque than European counterparts and it even felt faster than Hanzmund V8 despite that it was the fastest production sedan back in the day (160kph top speed and 130kph cruise speed). Sure, it was just a feel, because aerodynamics stopped the US sedan at 125kph, but I did some research, because something did not feel right.
I have found some more data and reworked the V8 to be more accurate. Rear tire pressure was recalculated once more after the trouble which I had with my 1930s French and Czechoslovak FWD models, which improved handling a lot (tire pressure plays a crucial role in stability of rear-engined cars with a swing axle). The car feels faster and much more stable now.