Spent today fitting my new scoop. It's a great looking thing with a very high quality of finish.
First job, remove the under bonnet insulation and the original scoop, then sit the new cooler in place to mark out the location. Engine bay looks better already.
Put the little foam blocks on the corners of the cooler and close the bonnet. They stick to the bonnet, drill through next to them and you now have your cooler location. Get your template and a helper and locate the template on the bonnet, measure many times.
Drill all the holes (27 of them) out to 8mm. First I drilled them at 3mm then removed the template, put down a heap of masking tape and then drilled them all to 8mm. Then trial fitted the scoop, all good. Get your air hacksaw out and chop a whopping huge hole in the middle of the bonnet. Clean up all the edges with a flapper wheel, debur and then give it a polish and your left with this. Seal the edges with some paint, I used Rust Guard and then sit the scoop on and see how it looks. This is as far as I got, I'll need to bolt it down later, much later.
Post edited, so as to not encourage other to bugger their bonnet...
NOTE: cut a rectangle that joins up the 4 holes you drilled through at the location of your foam blocks, don't follow the template like I did or you'll be up for another bonnet like I am