
18 Kick Some Jams Our last tip we can pass along has to do with adding speakers to a muscle car. None of these '60s/early '70s-era cars were designed with great audio systems, so adding modern speakers can be a real pain. A great way to get some full size speakers up front without doing any permanent damage to the doors or door panels is to buy a set of these new kick panels from companies like Year One, National Parts Depot, or Original Parts Group. They are redesigned to house the speaker and still fit in the interior. The E-brake will need to be spaced over, but other than that is the simplest way to flush out your audio system.