Tried soaking the pins in WD40, then used a heat gun?
As for the calipers above, the CBR600/Hornet/CBR900 gold calipers are all the same. Only a very slight difference from the older black calipers.
I use them on my race bike, and the amount of power they give is fantastic. Add on a set of steel discs and carbon pads and they give great braking power (not that you want either of the latter as they need warming up before they perform well).