2019 Touring: since March-2019
I have no idea of how this will sound, I made a detailed post in the Audio and Stereo Forum titled: "The Elite/Touring Stereo Upgrade Thread". Never owned any Polk speakers, but my understanding is that they do make some nice ones (depending on the price-point). You may want to take a look at my recommendations made in that thread...I hope to sweep the response before and after but what really counts of course is if I like the sound. Since these are coaxial with a tweeter I will probably also replace one of the originals with a load resistor and sweep the amplifier to see if it is full range or were it rolls off.
The problem with your new speakers are the Tweeters. I was originally considering coaxials until I spoke with a Crutchfield guy and my car installation guy. Also another member here tried some Infinity Coaxials in both doors and was not happy with the overall sound (you can search for that thread).
If you install Coaxial speakers you will be adding 4 additional tweeters to your system, these 8 tweeters will not sound right as they are different manufactureres, different specs and different sound levels. If you disconnect the existing 4 tweeters, you will be left with no highs directly hitting you and the highs will be muffled and buried down in the doors. Tweeters are VERY "directional" and Honda went through a great deal of effort/testing (with speaker placement) to create the proper sound-field in the PP. Coaxials will COMPLETELY defeat (ruin) it and it the new set-ups will sound WORSE!
I said this in the post I referred to above, but I'll repeat it here: The PP Elite/Touring Stereo system needs Component Speakers (separate woofers and tweeters)!
PS: Maybe the Polk DB6502?
Regardless of whatever you end up doing, please report back here and pictures are very welcome...!