Hi all, im probrably going over old ground but can someone please explain how this mk5/6 pedal conversion replaces the old mk3 set up?

I have an AP fast road clutch on my RS and im having trouble with the plastic clutch pawl shearing its teeth and slipping after a few hundred miles, i have just busted the second one in as many months

The pedal on the AP website has an adjusting bolt fitted, does this replace the pawl on the old type adjusters? how does this work compared to the old type? do i need a mk5 or mk6 pedal or are they the same? do i keep the mk3 clutch cable?

Sorry for all the questions im just abit miffed with these clutch ratchets keep breaking, luckily it happened near my house and not at Castle Combe

Thanks in advance