With the shorter final gear ratio, I would no longer drive 160 km/h in 5th gear at 4000 rpm, but 145 km/h. That's still OK, since I only drive the motorway with the 4/4 on holiday. The gain is that I can use gears two and three in the wider rev range on the country road. As it is now, I would theoretically drive 160 km/h in third gear at high revs, which affects the driving pleasure.
Regarding the LSD, after a break down of the gearbox in my Lotus Elise in 2021 I now have one out of a MR2 which is 10 percent longer than before which means also that now I drive 145 km/h at 4000 rpm (130 km/h before with the original ratio). It makes sense as the engine power is enhanced and FR was definitely too short. And a huge plus is that I now have a LSD in the Elise. I had to train to drive it under secure wet conditiins not to become surprised and lose the rear on a wet road when flooring the throttle which means driving even more carefully in the wet and knowing the points where it can break out but also being able to catch the car as well as possible. And of course to learn to take advantage of the LSD.
