This is the stereo I upgraded from my fosgate:

I didn't realize my speakers were blown, or at least getting there. If I turn up the volume, a crackling noise gets worse as the volume increases. Compared to the fosgate, I feel like the speakers need upgrading anyways. Electrical work isn't something I know much about, but having pulled the panel off my driver side, it looks simple enough to switch speakers out, at least in the front. I don't know what speakers would be good for the stereo power output and whatnot. I'd like good treble and bass but not looking to compete in loudness at car meets.

This is the only one I thought might be good, also because it's the same brand as the stereo:

But like I said, I have no idea lol. Thank you!