The kit includes everything needed for installation. It provides a significant upgrade from stock speakers, with added clarity at higher volumes. The quality is impressive for the price. Installation difficulty is rated 6 out of 10, but it can be done by anyone who takes their time and watches instructional videos. Allot enough time for the install, which typically takes a couple of hours. Rushing may lead to mistakes, so it's important to work methodically for a professional result. Research beforehand and don't hesitate to start the installation. It's a rewarding process. Consider purchasing rear speakers for an enhanced experience.