Stealth subwoofer install complete after stealing some inspiration from StealthGTI and a few others on the forums! Rockford Fosgate T1S1-10 paired w/ T500x1br Amplifier : r/GolfGTI
For VW Tiguan MK2 High Profile Speaker Subwoofer Set Car horn kit - AliExpress
Subwoofer box build for 2 dr GTI | VW Forum
VW Golf Mk2 II 1983-1995 - 13cm 5.25" 5-1/4 Inch Front Door Speakers Upgrade Kit | eBay