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Trunk Subwoofer Speaker Box Sub 06-08 Audi A3 - 8P4 035 382 B | CarParts4Sale, Inc.
M.A.P Audio & Customs - Custom made fiberglass 8" subwoofer enclosure for an audi a3 8v. This was hand made with mdf rings and support braces. It was then fiberglass and covered
Audi A3 - Custom Stealth Sub Install (Pictures Included) - AudiForums.com
Basser - FBaudi02 Audi A3 8P Fit-Box subwoofer enclosure