Kicker speakers are terrible. I know of a lot of people on here that use them, and no disrespect to them, but I would never use them in any of my vehicles. As an installer I saw WAYYY too many sets of those things die.
These kind of threads can go into so much info and detail that it can be overwhelming. I’ll try to keep it as simple as possible. There are a million ways to do it, and every single person will have a different opinion of what should be done.
What I did is this, in short. Pioneer double din, Infinity kappa 3 way 6x9’s in the front doors, kappa 5.25 2 ways in the back doors, polk audio tweeters in the factory dash locations with their own crossovers, 4 channel amp under the front passenger seat sending 80w rms per channel to the speakers, alpine type r 10” in a ported fox acoustics box under the rear driver side seat with a 500w rms amp under the front drivers seat. I think that’s it lol.
My advice, DONT try to get any bass out of your door speakers. This is how they get distorted and blown. They’re just not made for that and the construction of a door panel doesn’t lend itself well to creating bass.
Also, unless it’s a straight bolt in, don’t bother changing the backs to 6.5s if you’re getting a sub. The sub will provide all the bass you need and there’s no reason to modify anything to fit a larger speaker in there.
Core-Lokt I think is his name on here has a thread on audio upgrades that me and some other people contributed a lot of information to. It might be worth looking it up and reading through it.