Hi guys! Have original speakers at the top (2pieces). Wanted to do something long ago, but didn’t come to it…. Would like to replace the original speakers at the top with tweeters and doorboards at the front…. And there are holes in the shelf at the back, but I think they’re too small, right? Can you make them bigger or can you do that? I mean that’s part of the bodywork…. So the two biggest holes have a diameter of 7 cm…. Has that alreadyma I made someone?