My cars an unmodified 2004 31k and trying to resist the urge to change too much, think I'll try drilled box, been trying to get on on fleabay but keep getting outbid, rather keep my original if need or want to put back in. I do have a 02 Leon Cupra 180 at work to trade so might sneak it off before I sell it to the trade
its worth doing in my opinion if you dont want to spend any money on it and if you can pick up a replacement box for a good price then more reason to do it.
ill try doing a video of mine so you can hear what a drilled airbox sounds like.
it makes quite a difference. especially when the bonnet liner is removed too.
look on ebay for breaking seat leons and just message them all offering a sensible price for a replacement airbox. make sure its the 1.8 tho lol