Currently have cossie discs with standard S2 calipers on my S2 at present.

I have been offerred some 4 x 4 cossie calipers at a very reasonable price and was thinking of changing the S2 calipers for the 4 x 4 calipers.

Basically all I am asking is

1) What sort of improvement will I see if any at all ?

2) Is it worth it ?

Appreciate your thoughts