OVERKILL
$100 Site Donor 2021
There's something going on with that head unit. Sometimes the speakers sound "decent;" sometimes they sound weak, low, and distorted. Like sometimes it has power and sometimes it doesn't.
I personally think the other speakers are blown.
I'm "into" my car now so.. I'm liking the "cheap but complete" approach. Head unit upgrade so I can have my Bluetooth is a must.
Crutchfield sells some reasonably priced kits that would be a good fit if that's the case. They'll even provide you with the wiring adapter.