im looking at keeping the 5 speed, talked to albins today and said they're gearsets should be fine for up to 400hp anything over that the gear teeth will just wear slightly quicker but still shouldnt brake. I then asked how much wider the gears themselves were and he said 1mm, know this might be a big jump in strength but to me it seems an extra 1mm imho surely it couldnt make that much difference could it .

cheers