I replace my 4 door speakers on my 1997 Ford Explorer with Kenwood - 6" x 8" 3-Way Car Speakers with Polypropylene Cones Model: KFC-C6893PS Handles up to 240 watts peak power (80 watts RMS).
And using a Alpine - 200W Class A/B Bridgeable 4/3/2-Channel MOSFET Amplifier w/ Adjustable Crossover...