fitted one side of my aerocatch, took a while as i wanted no large cut out under the bonnet which was tricky so i only managed the one side

 

No large cut out under the bonnet

 

Mate how did you tighten the Bolt with out cutting the bottom ?

 

The aerocatch comes with a plastic gasket for holding the nuts in,i just stuck the nuts in place then screwed the catch on from the top,it was fiddly as the plastic gasket had to be wedged in place as you can't hold it once the catch itself is pushed in