oneGSR,
it should go like this:
1. screw in the provided bonnet studs (is that what they're called?) into the radiator panel area.
2. take some paint and mark the tips of the studs after you've securely screwed them in to the same level as each other.
3. quickly before the paint dries, close your bonnet slowly just so that the painted tips comes in contact with the bonnet. you should then have some paint/markings on the bonnet where the studs touched it.
4. drill the painted/marked spots indicated by the paint marking from the studs.
5. paint some anti-rust around the drilled area and touch up with original paint colour or however you see fit.
6. enjoy ur bonnet pins.
in theory that's how it should work la. :)
*i accept no responsibility should anything go wrong with your DIY project*