I currently have a 2016 Silverado 8” screen non Bose pickup. I’m new to all the audio stuff so maybe someone can give me a hand. I bought 4 new door speakers and installed them https://www.crutchfield.ca/S-F10U1yPcpZp/p_575R165S/Rockford-Fosgate-R165-S.html?awkw=295053334540&awat=pla&awnw=g&awcr=190580371911&awdv=m&awug=9000862
I have an issue. They don’t sound better than stock, they distort and just sound blah, no good bass. Couple of my buddies said they are underpowered, should I install an amp? If so which kind and can I just put it behind the head unit?