New to me Taco and trying to figure out audio upgrade

Hi,
I just bought a 2014 Tacoma Access Cab SR5 Prerunner. Loving it so far. I'm thinking about upgrading the sounds and I'm trying to figure out what I can do. I plan on keeping the factory head unit and just adding some nice component speakers and an amp. No sub. Any suggestions on speakers and amps, placement of the amp, and if keeping the factory head is going to make any upgrade pointless. Looking forward to participating here. Seems like a fun group and I've already found some cool stuff here (i.e how to customize the startup screen on the touchscreen).

 

Welcome and congrats on your Tacoma!