Permanent cowl cleanouts?

Im getting ready to do this to my car today actually. Cutting holes on both ends and installing body plugs. Im also going to do a couple on the inside of the car up about half way in the middle of the cowl. There are a couple flat areas that should work well.
You don't realise how much debris gets stuck in those crevasses until you take a old car for a first cruise and open the barn door vents and get showered with leaves and mouse skeletons. LOL Then when you flush under the hood and science projects come flowing out by your feet. Easy access to clean would be a great idea.