Porsche Cayman S: Dark Knight Leave a Comment / Audio, Custom Fabrication, Interior Lighting / By Ultra Auto Sound Get ready for whats inside. You'll be surprised Custom mounted amplifiers in the trunk, finished in leatherette Custom enclosure in trunk. Raised lettering: Porsche. upholstered in leatherette. Inside view from driver seat looking back. a w7 firing at you. 10W7 sealed in the trunk of a porsche. Red lighting to accent the custom enclosure. Skeleton of the enclosure. Braced. Nailed. Screwed.