JBL GX Series 5-1/4" 2-Way Car Speakers with Polypropylene Cones (Pair) Black GX528 - Best Buy
10 Best 6.5 Inch Car Speakers 2018 - YouTube
Alpine R-Series 6.5" 3-Way Hi-Resolution Component Pro Car Speakers with Glass Fiber Reinforced Cone (Pair) Black R2-S653 - Best Buy
Amazon.com: DS18 ZXI-5254 5.25" Car Audio Coaxial Speaker with Built in Neodymium Tweeter and Kevlar Cone – 2 Way 180 Watts Max 4 Ohm (2 Speakers) : Electronics