Depends what track length and if its tight/open, surface, weather, tyres, temperature, how fast you want to go etc etc... also depends on speedo settings.
For that wind get 23T, 24T and 25T pinions and you should be good for most circumstances... I use 22/23 on a 8.5T with mild boost, 21/22 on 6.5T with lower boost
Sometimes it is advised to use the manual suggestions loosely on gearing as the advice will be based on running on Clay/Dirt tracks and higher ambient temperatures so on some cars it can be way out to gearing for higher bite UK tracks
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Mr F.Chimp
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