Summary: Bought these thinking that I will need to modify something because the guide says that they will not fit in the doors of my challenger. They fit perfectly, make sure you attach the spacer that is included with the speakers. Not sure why the tech advisors say they won't fit.
Conclusion: Just put a whole set in my neon with a 4ch. They sounded okay without the amp but after I hooked em up to it they were sounding totally different. I absolute love these and would suggest these to anyone looking for high end sound at a cheaper price. The bass is low.