The reason for this question is that I recently changed the gearbox on my Breva because of the terrible noise that was produced by 4th gear...it was making a noise like "Sherman tank" from ww2

I couldn't find decent gearbox from Breva/Nevada so I bought the used gearbox from TLM -Netherlands and it is supposed to be V65 Florida gearbox with 48000km and it is working really good at the moment.
As I found...V65 Florida gearbox have all the gears the same except the 2 primary gears that have a bit "shorter ratio"
I have been riding my Breva today...and at 80km/h my Breva has exactly 3500rpm...
Well according to your information guys...my "new" gearbox is the same as original...
Well ... I am a bit confused right now