JBL Club 8620 6"x8" 2-way car speakers at Crutchfield
Amazon.com: Kenwood KFC-D681C 6 X 8 -Inch 2-Way, Performance Series Car Audio Speakers - 360 Watts of Peak Power, Full Range, Shallow Mount is Perfect Factory OEM Replacements : Electronics
Clarion SRG6833C 300-Watt 6 x 8 Inches 3-Way Car Speakers 5060431064939 | eBay
6x8" - Audiocom.cz
Audio Legion CMG68 | 6x8" 200 Watt Max Golden Coaxial Speakers (pair) | Audio Legion