Brake question

Hi
Sorry for stupid question but I have the FSA brakes that came with a 105 spec Focis Cayo. Want to upgrade but thought I'd try different pads first and looking at swissstop green. Can someone advise which ones would be compatible as there seem to be a few different options. And would I need to replace the whole block/show or just pads?
Cheers
Sorry for stupid question but I have the FSA brakes that came with a 105 spec Focis Cayo. Want to upgrade but thought I'd try different pads first and looking at swissstop green. Can someone advise which ones would be compatible as there seem to be a few different options. And would I need to replace the whole block/show or just pads?
Cheers
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Posts
They are the fsa gossamer brakes.