Well, the top hole need to be filled, the lower coilover hole that attaches to the knuckle needs to be filled as well. Bought brand new corsa mounts, like 5 bucks each.
And finally, used the original corsa spacer for the front coilovers. Bought them at the scrapyard.
It's this part on the pictures, alot of people just makes a custom one or just use plain old washers. I prefer my method...

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