Time to do some searching, but, what wheels are you using?
If 14s you can put Punto GT discs and calipers on, covered in detail in the guides section.
If 13s, Uno turbo set up.
Cheers
D
ps, I've just read your other post. Insurance at your age is going to be like anal rape without lube for a standard car. Modifications are going to push it even further up.
The car weighs as much as a snotty hanky, just make sure the standard braking system is in perfect condition and you will have no difficulty stopping.