11" JBL BassPro Hub Subwoofer Install in 1991 Fox Body Mustang (Spare Tire Well Sub) - TIPS05E48 - YouTube
For those of you who want more bass but don't want to sacrifice your spare tire or hatch space, I highly recommend this spare tire mount subwoofer : r/GolfGTI
JBL BassPro Hub | 11" (279mm) Spare tire subwoofer with built-in 200W RMS amplifier with remote control.