Using that as the basis I took it a stage further and made a vented cabinet out of the nearside rear quarter cavity and stuck a little 60W amp module behind the dash, connected to the HU with a short phono lead and used the existing sub wiring to the driver. Making the enclosure airtight and damping out all the resonances in the body panels was quite a task (you HAVE to get it airtight!) - lots of expanding foam and self adhesive damping mat stuff, but it was worth the effort, response flat to 30Hz. Sounds awesome with EDM 🙌. The original sub driver is frankly a joke, probably the worst bit of design in the car!That's the one bud.. Good job.