I've got an uprated clutch..
These are some figures from a kit car with the kit.. (As far as I'm aware they are anyway!!)
I was quoted around £320 for cams, bolts, and shims. This is on an exchange basis, for your old cams.

You need to make sure that it's the black top engine with ZETEC SE stamped on the rocker cover.
As for ported and polished head, the standard head is good for 190bhp so people say.

Not had my stuff fitted yet, got all the bits waiting, should be done for just before FITP.
RPM BHP TQ
3000 63 108
3500 80 120
4000 97 128
4500 109 128
5000 127 133
5500 156 149
6000 171 149
6500 174 141
7000 177 106