Well, I have a different generation Civic, so I don't know how much help this will be..For the back speakers I lined up a few of the holes that I could and drilled new ones as needed. Autozone had speaker connector adaptors for $3, which I used as I'm not crazy about cutting things if I don't have to. As for the front, I cut a hole for the tweeters near the top of the door panel and inserted them. The panel is kind of thick so the retaining (snap ring) they give you would not snap all of the way in, so I glued it. For the 6.5" you have to run new wires so you can amp it. Running the wires can be a pain, because I was not able to find existing holes in door and jamb and so had to drill them, and then insert a rubber grommet to protect the wires. The crossover I mounted in the armrest cavity (It fit nicely). Use some tape to hold it where you think it should be and try putting the panel back on...If its ok, then your good to go...If not, then reposition it and try again. I used a 1" speaker spacer from Scoche to get the speaker to fit without cutting the basket it sits in. That basket is intended to keep water off of your speaker, which will help it to last longer, and cutting it would not give me a whole lot more room anyways (maybe 0.25") If you cut it, which is fine, you may still need a spacer to keep the magnet from interfering with the window. If you're not sure, put the window down and see how its fitting. Since the speaker was sitting an inch further into the vehicle than stock I could not use the OEM grilles and instead used the ones that came with the speakers. I have a small gap between the speaker opening in the door and the CDT grill but it doesn't look bad and I'll fix it soon..