It was just going to be a simple Bosectomy / factory replacement but one of the Focal ISU200 woofers was dead out of the box. I already have the car apart, so
Focal ISU 200 new in box - Rennlist - Porsche Discussion Forums
Amazon.com: Focal ISU 200 8" Component System : Electronics
Customer Reviews: Focal ISU 200 Universal Integration Series 8" component speaker system at Crutchfield