Speakers with decent bass quality

Hey everyone! I tried searching and found some answers, but not really for what I’m looking for. First post so go easy on me I’m looking to upgrade the speakers It’s a 2021 SR, with stock 7” head unit, and I plan to keep that. What are my options for replacing my speakers and gaining some substantial quality of sound and bass level without adding a sub or switching out the head unit? I don’t mind amping my speakers if needed

 

Infinity Kappa's in both the front and rear doors . 6X9 in the front and 6" in the back. Drive them with a 4 channel 400w good quality amp.
I've had that set up in a 2nd gen, and now my 3rd gen. Both with the factory head units.
This will be the best bang for the buck.

 

Ill look into this ^ much appreciated

 

Welcome to TW! I went with Kicker speakers and a 300 watt amp which made a huge difference, I eventually replaced the head unit with a Kenwood which was an even bigger improvement.