@mrrich724 , it’s more about the total volume of the enclosure and the design of the baffle. Almost anything you put in a car will be a ported enclosure, and the way the enclosure is tuned determines how much kick you get out of it and how much distortion you get. All ported speakers have some drawbacks compared to a sealed design, but you get more sound out of a small enclosure that way. The driver element has a lot to do with it, too. As a rule, you want something with a heavy alnico or neodymium magnet as opposed to the ceramic magnets common in cheap speakers.
The amplifier is very important, too. It’s hard to make a high-power amplifier that can be powered by 12VDC that can drive a low-impedance load without instability. If you buy a powered speaker, the engineers will have designed the system to avoid those problems, but if you’re a DIY guy, don’t skimp on the amplifier. A good 100W amp will give you better results than a crappy 400W one.