Day to day driving you don't even know you have a aftermarket diff installed. There is no clunking, banging of harshness of ANY kind (it's gears, not plates like a "normal" diff).... That is until you put your foot down around a corner and you have all this front end grip that you never had before.
A GTR engine should not go back in without one of these installed, period. I only wish I did it 7 years ago instead of 2. The best mod and should be one of the first done, V spec or not!