Passat Variant

Hello experts … we have a passat with the CD300 system with 8 boxes, now there is the Dynaudio system with 10 boxes and we ask ourselves where the 2 other boxes are installed. We would like to get further some ideas which other systems are suitable for installation in a Passat 3C… your expertise is desired … and since we know that you can spend from 0 to 10,000 Euri, I think myself to the price category from 1000 to 1500 Euri max.