Hi Guys, I am planning to change my Suzuki Swift stock HU and component speakers to : 1. Pioneer P3450 2. Helix E62C or B62 / German Maestro CS-6508IV. ( Price?) 3. Sound Proof my 2 front door.( How many layers? ) Any guru to advise? It would be good if you are able to indicate the shop name and price of the Helix component speaker through PM. Can't really get much info from Google for Helix E62C and B62C component speakers from owners. Your help is greatly appreciated.