legacycentral bbs

ok i have a standard flywheel and clutch i got for my 5mt rwd conversion now i got told that it is balanced up as it has holes on one side more than the other its an ej20g engine and a bg5 gearbox cable type

is this normal ?
is there a particular way to fit it ?
or can i just slap it on anyway ?

i have seen other that look the same it looks standard

help would be appreicated cheers

Unless it's been modified, I think you can just bolt it up. I don't think the flywheel comes balanced to the pp & clutch.