After 9 years of ownership, and a proper spoiling by a Bluetooth head unit in my Regal, I have decided enough is enough.

The LF channel is dead
The RF speaker is fragged
I have no idea why the rear speakers are still working
The factory installed cassette player has never worked right

The approach should be consistent with a beater status vehicle. I am happy with the stereo in my Regal (Pioneer DEH-6600BT on stock 6 speaker setup), although admittedly I do find myself exercising restraint on account of the speakers, or namely, my lack of desire to replace any just yet.

My thoughts so far:
Bluetooth head unit:
https://smile.amazon.com/gp/product/...A3BXL56N5TYVTQ
$30 for pretty rave reviews is pretty enticing. There are doubts about illumination, or namely, a lack of dimming features, especially given the location of the radio. I am open to other suggestions on this front as well. Spotify via Bluetooth is the primary interest.

Speakers:
Given that factory sized 4x6'* seem hard to come by, several sites recommend a 4" round in front. According to the internets, Rockford Fosgates seem to punch well above their weight class as far as speakers go, especially in the 6x9 category. With that, these seem like a decent bet:
https://smile.amazon.com/gp/product/...A18CQ5FFITKTLU

Dash install kit (The cubby sells it for me):
https://smile.amazon.com/gp/product/...A28AQA2BK8DWCU

Antenna Adapter:
https://smile.amazon.com/gp/product/...=ATVPDKIKX0DER

Harness Plug (I am guessing this gives a stock interface so you don't have to hack the harness?):
https://smile.amazon.com/Metra-70-18...ywords=70-1858

This is honestly my first round with a stereo, and I am a bit lost in the car audio scene. It seems like installation isn't exactly rocket science from what I gather

I am hoping to find out what the thoughts are about everything, and if I need to make any adjustments. Any pointers are also welcome. This may be my first time in, but it doesn't exactly seem like rocket science either.

Your PA doesn't have an external amplifier, does it?

I don't believe so. Its the basic 4 speaker unit.

That'* good. Some of the aftermarket harnesses (PA, DeVille) attenuate the signal and drive the original amp on cars that had the higher stereo. This might work well, assuming the amp is still any good.

Um, $30 for a head unit? Don't waste your time or money. If you want good audio, you have to pay the price. A decent HU should set you back about $200. Then another $200 or so for matching speakers. Believe me, I played the cheap route and was far from satisfied.

I do agree, you get what you pay for. That'* just it though, I don't feel that this particular car is an appropriate application for "good audio", between the amount of noises it makes rolling down the road, to the prospective price tag being about as much as the car as worth.

I am looking at restoring or slightly improving upon stock capabilities, and adding modern day amenities that didn't exist when this car was built 23 years ago. Mainly something to drown out the squeaks and rattles if you will.