Pioneer TS-A1673R 6-1/2" 3-way car speakers — also fit 6-3/4" openings at Crutchfield
driven by sound - CONVOY International | Manualzz
Amazon.com: JVC CS-DR421 4" Inch Car Speakers, 220 Watts of Power, 110 Watts Each, 2-Way Coaxial, Built Tough, Perfect Factory OEM Replacements, Sold in Pairs : Electronics