I have tried everything. I have said it before. The 987 footwell subwoofer fits perfect and sounds great with and aftermarket amp..  06 Cayman s rwd Porsche 987 Black Bose Sub Subwoofer 99764556600 53 488 | eBay
__________________
996 3.4 engine with 2.7 986 5speed transmission
Ebay Headers, Fabspeed high flow cats, JIC Cross, IPD Plenum, H&R Coilovers, B&M Short Shifter, AEM Uego Gauge Type Analog, Apexi S-AFC Select, 987 air box, Litronics, 2000 Tails and side markers, painted center console, 18" 987 S-Wheels, GT3 Front bumper with splitter.
|