Where to put bonnet vents

[astramod]

Want to fit gsi bonnet vents to my Astra sport model, but want to try and locate these precisely to the original spec as found on the gsi. Anyone know how far up the bonnet (from the front) and how far in from the edge they go ?
A close up pic of just the bonnet would be good if anyone has one, as would the measurements.
Cheers

[Tom Williams]

you will need to paint the bonnet if you sink them into the bonnet properly

you could buy a copy bonnet with the holes already cut of you have the vents

[rossnunn]

Out of interest, are the gsi bents flat bottomed, ie you don't have to cut the bonnet?