Measures hole rear bumper for ops

[Micke]

Hello
Im installation the Ops in my seat Ibiza 6j but i have one problem my rear bumper havent marks in the bumper for open holes. I need know if have drawing with measures for this.please
Thanks for help me
I know that bumper polo 6R and seat Ibiza 6j are similars them i think that are same measure for hole

[iichel]

18mm

[Micke]

Thanks 18mm Is the diameter of holes but i need know the position of this hole
Regards

[iichel]

if i'm not mistaken the holes are not in the bumper but in the lower diffuser (black part)

[Micke]

Yes this have the Mark in diffuser but i like in bumper. The model fr have this in bumper
Thanks
Regards