Hi just fitted one to mine, it needs to be the spring loaded type, if you open the bonnet and look at the underside you will see a circle cut out in the bonnet reinforcement just behind the latch, you need to find the centre of this and drill a pilot hole through, close the bonnet and open up the hole using increasing sized drill bits until the desired size is achieved (16mm for mine) B&Q sell large drill bits with a machined shank to fit a standard size drill chuck only takes about half an hour to do and looks fantastic :D
