Pioneer 6 1/2" 2-way Coaxial Speakers (Pair) Black TS-G650 - Best Buy
Pioneer TS-600M, 6-1/2" 4-way Coaxial Speakers, 320W Max Power | 11mm Tweeter and 11mm Super Tweeter and 1-5/8" Cone Midrange | Coaxial Speakers | (Sold in Pairs) - Walmart.com
Pioneer TS-A1685R 6-1/2" 4-way car speakers — also fits many 6-3/4" openings at Crutchfield
Pioneer 6 1/2 inch 3-Way Car Speakers | Verishop
Pioneer 6 1/2" Component Car Speaker | P.C. Richard & Son
Pioneer TS-SWX2502 10 inch Shallow-Mount Pre-Loaded Enclosure W/ 400W 4-Channel GM Digital Series Class FD Amplifier/ Pioneer 6 3/4" Component Speaker Package - Walmart.com