Mk3 polo Instument cluster upgrade

Hi might have already been asked but can find it, 

wanting to swap clocks in my mk2F polo coupe, I currently have the big analogue clock in place of the rev gauge and was wanting to swap this for GT like clocks with rev guage and digital clock, needing to know if there are wiring in place and it's just a plug in or if additional wiring will have to be done. 

Any help will be appreciated 

Thanks