Will these speakers be a simple plug and play?

I couldn't tell you about the fit. (but Crutchfield can, they're awesome for that stuff!)

The speaker connectors won't match. They don't need to match; they're just speaker connections. Easy to solder up or add your own connectors.

There is a crossover for the tweeter in the door. You get to decide how you want to integrate it. You can ignore it or include it. Maybe try both and see which sound you like better.

When I did my speakers, I added a set of nice aftermarket tweeters in place of the factory ones

 

I believe in the sea your speakers they're six and a half's or six and some change and they're on their own plates that are either riveted to the metal door panel inner itself or they may be screwed on The new ones you're going to put on You're either going to drill a hole and put a plastic fitting and put a plastic a metal wood screw type of thing to hold the new speaker panel on or you're going to use sheet metal screws and screw right into the sheet metal The little hole that's left from the rivet. The Twitter I think can stay I guess in the seas you don't have tweeters mounted up in the windows or on the dash or any of that? If not that should all work your new speakers are probably not going to take the plug that's connected to your factory speakers so you'll probably cut the wires make a note of which wires which for the positive and negatives etc so you don't get phasing of your speakers I don't know what the colors are and what they do for that model so you need to look that up in your schematic other than that you should be good to go but you will need adapter plates they're like you can get them at Walmart even everybody makes them it's the standard Asian car six and a half inch plastic door speaker spacer adapter It has strategically placed holes on it so you can mount it on your inner door panel with the speaker in it and all that it's pretty self-explanatory when you see the plates or if you order them from crutchfield or Amazon it's not too technical.

 

The "placebo effect" not withstanding..............
Replacing ONLY the speakers likely will accomplish nothing useful except making your wallet lighter.
No extra volume.
No extra sound quality that you can notice in a tiny car with lots of road noise.
But be sure you come back and tell us how WRONG I am and how much you love them.

 

OK fine. Your car, your money.

I wouldn't put TOO much into a 10 year old vehicle though.

The new speakers should "match" the new amp........so buying them at different times sometimes is not a good plan.

Good luck.