Faster Commandos

I suggest a Commando motor is fast enough for road racing without much modification. As standard, the crank balance factor is too low, and the carburetors limit its tuning, especially when petrol is the fuel. The standard gearbox is useless. To efficiently use that level of torque , higher overall gearing combined with close ratios - preferably 6 gears, are needed. For classic racing, an engine management system and fuel injection would need to be hidden, unless the regulations permit the use of methanol.

I started to reply to Al but then came to my senses.

Good for you. One can never be sure which end Al is talking from. Maybe both. THAT would be talent!