I'm currently thinking of upgrading the speakers in my 2018 Equinox because a couple are starting to get a bit of static and I figure might as well do a clean sweep and upgrade everything for better audio. My only problem is I haven't really done this type of work before and was curious what I should be looking for and how do I know where every speaker in my car is and what size speaker to get? I'd like to get speakers that are just plug and play and I don't plan on adding a sub at this time so I would like to avoid having to get a new radio or adding amps if necessary.