George - in a nutshell, will a pair of cbr600 calipers bolt straight on? What improvement is there? Lots. I haven't tried the new pads yet. If they turn out to be crap I'm keen to upgrade.
Yup, the difference is vast.
My C10 brakes are now as good as the C14 except for the lack of ABS.
Vastly better feel is the biggest difference which means you can brake later and harder.
The stopping power of the OEM brakes is already good but they are wooden as a tree.
I've not used those brackets as they are for the late bikes but as you can see plenty of others have.
My bike also has braided hoses and a rebuilt stock master cylinder.
I am about to upgrade my front forks (new springs, oil, seals, bushes) as the brakes have shown just how bad the front end now is.