Very very easy mate
10 minute job
Engine cover off
Unclip coil electrical connectors off top of each coil
Pull all 4 coils out
Push all 4 new coils firmly into position
Refit plugs connectors
Refit engine cover
Job done
I applied a smear of white grease around the rubber bit of each coil to aid easy installation into rocker cover hole but not necessary really
Why R8 ones mate the latest revision Golf ones are fine
Just bought some myself off ebay £14 each delivered
Vw wanted £43 each