I have fitted a zetec to my robin hood replacing the into, however to get the inlet manifold with bike crabs to clear the brake master cylinder I'm going to fit a fiat punt unit with remote reservoir, would this cylinder provide sufficient braking to the sierra brake callers fitted?, I'm using this cylinder as space is an issue

Bike crabs? Fiat punt? Are you building a boat?
This is a car forum.

Punto,
carbs

Should be fine, should only make a difference to the brake pedal effort, this can be modified by changing the attachment point of the master cylinder to the lever .
There are diagrams in the Rally Design catalog, Wilwood page.

Cheers snapped will try it and see what happens

the fiat m/c is a smaller dia and will improve the brakes 100% (ish)