[Aussie Mike]

With the right master cylinder size and pedal ratio you can make you vlutch pedal as light as a 4 cylinder car.

It's all about leverage. If you use a smaller master cylinder and a longer throw on the pedal you can move the same ammount of hydraulic fluid and have a light pedal feel.

Try it with the pedal setup you already have and then change the pedal ratio to get the best result. If you can't get enough out of the pedal ratio then look at changing the master cylinder size.

Cheers