I've considered both options for my 2 seater - i.e. Type 9 box or change axle ratios. I don't trial the car, but I would not want to aim for 3000 rpm at 70 in a X-flow with Morgan aerodynamics - it would lead to constant cog-swapping on motorways. OK, mine is pretty much standard performance.
The mods done above tend to raise the power output at higher revs, not low down torque, so the problem may actually be worse if too high a diff ratio is chosen...
It's a shame there isn't an overdrive available (together with the space for it to fit!).
Cheers,
Last edited by Graham, G4FUJ; 01/01/13 08:46 PM. Reason: sticky space bar