Timing Belt service (1.6L caddy CWVA motor)

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Hi All

I am trying to find the correct part numbers and how to for a timing belt change on my caddy

It is a CWVA 1.6L petrol motor. But there is so much conflicting info on the web. Can anyone help with the right part numbers for the belt kit, tensioner etc?

Main questions:
Is the cwva motor oil pump driven off a seperate toothed belt?
Is it recommended to replace the thermostat when doing this?
Any special (vag specific) tools needed for the job?

Thank you
Mike